Home / 28,146.20-38,841.12-15,399.32

Finding the Fourth Proportional to 28,146.20, 38,841.12 and 15,399.32

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Solution

The fourth proportional to 28,146.20, 38,841.12 and 15,399.32 is: 21,250.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.20 : 38,841.12 = 15,399.32 : x
  2. Step 2: Convert to fraction form
    28,146.20/38,841.12 = 15,399.32/x
  3. Step 3: Cross multiply
    28,146.20x = 38,841.12 × 15,399.32
  4. Step 4: Simplify right side
    28,146.20x = 598,126,641.83
  5. Step 5: Solve for x
    x = 598,126,641.83/28,146.20
  6. Step 6: Final answer
    x = 21,250.71

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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.