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Finding the Fourth Proportional to 28,175.08, 38,865.90 and 18,092.20

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Solution

The fourth proportional to 28,175.08, 38,865.90 and 18,092.20 is: 24,957.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,175.08 : 38,865.90 = 18,092.20 : x
  2. Step 2: Convert to fraction form
    28,175.08/38,865.90 = 18,092.20/x
  3. Step 3: Cross multiply
    28,175.08x = 38,865.90 × 18,092.20
  4. Step 4: Simplify right side
    28,175.08x = 703,169,635.98
  5. Step 5: Solve for x
    x = 703,169,635.98/28,175.08
  6. Step 6: Final answer
    x = 24,957.15

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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.