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Finding the Fourth Proportional to 15,051.69, 20,770.97 and 8,337.20

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Solution

The fourth proportional to 15,051.69, 20,770.97 and 8,337.20 is: 11,505.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,051.69 : 20,770.97 = 8,337.20 : x
  2. Step 2: Convert to fraction form
    15,051.69/20,770.97 = 8,337.20/x
  3. Step 3: Cross multiply
    15,051.69x = 20,770.97 × 8,337.20
  4. Step 4: Simplify right side
    15,051.69x = 173,171,585.54
  5. Step 5: Solve for x
    x = 173,171,585.54/15,051.69
  6. Step 6: Final answer
    x = 11,505.13

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Half scale
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Double scale
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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.