Home / 19,938.65-29,854.78-15,787.13

Finding the Fourth Proportional to 19,938.65, 29,854.78 and 15,787.13

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Solution

The fourth proportional to 19,938.65, 29,854.78 and 15,787.13 is: 23,638.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,938.65 : 29,854.78 = 15,787.13 : x
  2. Step 2: Convert to fraction form
    19,938.65/29,854.78 = 15,787.13/x
  3. Step 3: Cross multiply
    19,938.65x = 29,854.78 × 15,787.13
  4. Step 4: Simplify right side
    19,938.65x = 471,321,104.24
  5. Step 5: Solve for x
    x = 471,321,104.24/19,938.65
  6. Step 6: Final answer
    x = 23,638.57

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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.