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Finding the Fourth Proportional to 18,766.98, 28,128.96 and 8,892.24

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Solution

The fourth proportional to 18,766.98, 28,128.96 and 8,892.24 is: 13,328.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,766.98 : 28,128.96 = 8,892.24 : x
  2. Step 2: Convert to fraction form
    18,766.98/28,128.96 = 8,892.24/x
  3. Step 3: Cross multiply
    18,766.98x = 28,128.96 × 8,892.24
  4. Step 4: Simplify right side
    18,766.98x = 250,129,463.27
  5. Step 5: Solve for x
    x = 250,129,463.27/18,766.98
  6. Step 6: Final answer
    x = 13,328.17

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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.