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Finding the Fourth Proportional to 20,052.59, 30,061.96 and 12,640.70

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Solution

The fourth proportional to 20,052.59, 30,061.96 and 12,640.70 is: 18,950.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,052.59 : 30,061.96 = 12,640.70 : x
  2. Step 2: Convert to fraction form
    20,052.59/30,061.96 = 12,640.70/x
  3. Step 3: Cross multiply
    20,052.59x = 30,061.96 × 12,640.70
  4. Step 4: Simplify right side
    20,052.59x = 380,004,261.33
  5. Step 5: Solve for x
    x = 380,004,261.33/20,052.59
  6. Step 6: Final answer
    x = 18,950.39

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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.