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Finding the Fourth Proportional to 19,701.96, 29,552.94 and 13,140.96

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Solution

The fourth proportional to 19,701.96, 29,552.94 and 13,140.96 is: 19,711.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,701.96 : 29,552.94 = 13,140.96 : x
  2. Step 2: Convert to fraction form
    19,701.96/29,552.94 = 13,140.96/x
  3. Step 3: Cross multiply
    19,701.96x = 29,552.94 × 13,140.96
  4. Step 4: Simplify right side
    19,701.96x = 388,354,002.42
  5. Step 5: Solve for x
    x = 388,354,002.42/19,701.96
  6. Step 6: Final answer
    x = 19,711.44

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Double scale
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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.