Home / 21,346.11-29,454.92-11,915.07

Finding the Fourth Proportional to 21,346.11, 29,454.92 and 11,915.07

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Solution

The fourth proportional to 21,346.11, 29,454.92 and 11,915.07 is: 16,441.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,346.11 : 29,454.92 = 11,915.07 : x
  2. Step 2: Convert to fraction form
    21,346.11/29,454.92 = 11,915.07/x
  3. Step 3: Cross multiply
    21,346.11x = 29,454.92 × 11,915.07
  4. Step 4: Simplify right side
    21,346.11x = 350,957,374.07
  5. Step 5: Solve for x
    x = 350,957,374.07/21,346.11
  6. Step 6: Final answer
    x = 16,441.28

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Half scale
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Double scale
Find fourth proportional to 21,347.11, 29,456.29 and 11,916.07
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.