Home / 28,732.71-39,651.39-15,987.36

Finding the Fourth Proportional to 28,732.71, 39,651.39 and 15,987.36

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Solution

The fourth proportional to 28,732.71, 39,651.39 and 15,987.36 is: 22,062.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,732.71 : 39,651.39 = 15,987.36 : x
  2. Step 2: Convert to fraction form
    28,732.71/39,651.39 = 15,987.36/x
  3. Step 3: Cross multiply
    28,732.71x = 39,651.39 × 15,987.36
  4. Step 4: Simplify right side
    28,732.71x = 633,921,046.43
  5. Step 5: Solve for x
    x = 633,921,046.43/28,732.71
  6. Step 6: Final answer
    x = 22,062.70

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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.