Home / 19,915.34-29,845.13-14,979.20

Finding the Fourth Proportional to 19,915.34, 29,845.13 and 14,979.20

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Solution

The fourth proportional to 19,915.34, 29,845.13 and 14,979.20 is: 22,447.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,915.34 : 29,845.13 = 14,979.20 : x
  2. Step 2: Convert to fraction form
    19,915.34/29,845.13 = 14,979.20/x
  3. Step 3: Cross multiply
    19,915.34x = 29,845.13 × 14,979.20
  4. Step 4: Simplify right side
    19,915.34x = 447,055,947.17
  5. Step 5: Solve for x
    x = 447,055,947.17/19,915.34
  6. Step 6: Final answer
    x = 22,447.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.