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Finding the Fourth Proportional to 28,862.59, 39,829.99 and 16,115.99

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Solution

The fourth proportional to 28,862.59, 39,829.99 and 16,115.99 is: 22,239.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,862.59 : 39,829.99 = 16,115.99 : x
  2. Step 2: Convert to fraction form
    28,862.59/39,829.99 = 16,115.99/x
  3. Step 3: Cross multiply
    28,862.59x = 39,829.99 × 16,115.99
  4. Step 4: Simplify right side
    28,862.59x = 641,899,720.54
  5. Step 5: Solve for x
    x = 641,899,720.54/28,862.59
  6. Step 6: Final answer
    x = 22,239.85

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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.