Home / 30,436.76-42,001.92-17,008.12

Finding the Fourth Proportional to 30,436.76, 42,001.92 and 17,008.12

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Solution

The fourth proportional to 30,436.76, 42,001.92 and 17,008.12 is: 23,470.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,436.76 : 42,001.92 = 17,008.12 : x
  2. Step 2: Convert to fraction form
    30,436.76/42,001.92 = 17,008.12/x
  3. Step 3: Cross multiply
    30,436.76x = 42,001.92 × 17,008.12
  4. Step 4: Simplify right side
    30,436.76x = 714,373,758.07
  5. Step 5: Solve for x
    x = 714,373,758.07/30,436.76
  6. Step 6: Final answer
    x = 23,470.76

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Find fourth proportional to 15,218.38, 21,000.96 and 8,504.06
Half scale
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Double scale
Find fourth proportional to 30,437.76, 42,003.30 and 17,009.12
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.