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Finding the Fourth Proportional to 18,672.30, 28,008.45 and 16,631.10

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Solution

The fourth proportional to 18,672.30, 28,008.45 and 16,631.10 is: 24,946.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,672.30 : 28,008.45 = 16,631.10 : x
  2. Step 2: Convert to fraction form
    18,672.30/28,008.45 = 16,631.10/x
  3. Step 3: Cross multiply
    18,672.30x = 28,008.45 × 16,631.10
  4. Step 4: Simplify right side
    18,672.30x = 465,811,332.80
  5. Step 5: Solve for x
    x = 465,811,332.80/18,672.30
  6. Step 6: Final answer
    x = 24,946.65

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.