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Finding the Fourth Proportional to 12,471.60, 18,710.48 and 3,706.51

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Solution

The fourth proportional to 12,471.60, 18,710.48 and 3,706.51 is: 5,560.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,471.60 : 18,710.48 = 3,706.51 : x
  2. Step 2: Convert to fraction form
    12,471.60/18,710.48 = 3,706.51/x
  3. Step 3: Cross multiply
    12,471.60x = 18,710.48 × 3,706.51
  4. Step 4: Simplify right side
    12,471.60x = 69,350,609.47
  5. Step 5: Solve for x
    x = 69,350,609.47/12,471.60
  6. Step 6: Final answer
    x = 5,560.68

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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.