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Finding the Fourth Proportional to 18,770.56, 25,909.14 and 10,818.08

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Solution

The fourth proportional to 18,770.56, 25,909.14 and 10,818.08 is: 14,932.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,770.56 : 25,909.14 = 10,818.08 : x
  2. Step 2: Convert to fraction form
    18,770.56/25,909.14 = 10,818.08/x
  3. Step 3: Cross multiply
    18,770.56x = 25,909.14 × 10,818.08
  4. Step 4: Simplify right side
    18,770.56x = 280,287,149.25
  5. Step 5: Solve for x
    x = 280,287,149.25/18,770.56
  6. Step 6: Final answer
    x = 14,932.27

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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.