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Finding the Fourth Proportional to 12,471.57, 18,710.46 and 3,706.49

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Solution

The fourth proportional to 12,471.57, 18,710.46 and 3,706.49 is: 5,560.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.57 : 18,710.46 = 3,706.49 : x
  2. Step 2: Convert to fraction form
    12,471.57/18,710.46 = 3,706.49/x
  3. Step 3: Cross multiply
    12,471.57x = 18,710.46 × 3,706.49
  4. Step 4: Simplify right side
    12,471.57x = 69,350,179.66
  5. Step 5: Solve for x
    x = 69,350,179.66/12,471.57
  6. Step 6: Final answer
    x = 5,560.66

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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.