Home / 28,308.72-39,062.34-15,731.04

Finding the Fourth Proportional to 28,308.72, 39,062.34 and 15,731.04

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Solution

The fourth proportional to 28,308.72, 39,062.34 and 15,731.04 is: 21,706.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,308.72 : 39,062.34 = 15,731.04 : x
  2. Step 2: Convert to fraction form
    28,308.72/39,062.34 = 15,731.04/x
  3. Step 3: Cross multiply
    28,308.72x = 39,062.34 × 15,731.04
  4. Step 4: Simplify right side
    28,308.72x = 614,491,233.03
  5. Step 5: Solve for x
    x = 614,491,233.03/28,308.72
  6. Step 6: Final answer
    x = 21,706.78

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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.