Home / 10,911.67-15,058.75-8,218.14

Finding the Fourth Proportional to 10,911.67, 15,058.75 and 8,218.14

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Solution

The fourth proportional to 10,911.67, 15,058.75 and 8,218.14 is: 11,341.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,911.67 : 15,058.75 = 8,218.14 : x
  2. Step 2: Convert to fraction form
    10,911.67/15,058.75 = 8,218.14/x
  3. Step 3: Cross multiply
    10,911.67x = 15,058.75 × 8,218.14
  4. Step 4: Simplify right side
    10,911.67x = 123,754,915.73
  5. Step 5: Solve for x
    x = 123,754,915.73/10,911.67
  6. Step 6: Final answer
    x = 11,341.52

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Find fourth proportional to 5,455.84, 7,529.38 and 4,109.07
Half scale
Find fourth proportional to 21,823.34, 30,117.50 and 16,436.28
Double scale
Find fourth proportional to 10,912.67, 15,060.13 and 8,219.14
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.