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Finding the Third Proportional to 20,191.78 and 29,639.67

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Solution

The third proportional to 20,191.78 and 29,639.67 is: 43,508.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,191.78 : 29,639.67 = 29,639.67 : x
  2. Step 2: Convert to fraction form
    20,191.78/29,639.67 = 29,639.67/x
  3. Step 3: Cross multiply
    20,191.78x = 29,639.67 × 29,639.67
  4. Step 4: Simplify right side
    20,191.78x = 878,510,148.86
  5. Step 5: Solve for x
    x = 878,510,148.86/20,191.78
  6. Step 6: Final answer
    x = 43,508.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.