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Finding the Fourth Proportional to 12,470.74, 18,708 and 3,704.56

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Solution

The fourth proportional to 12,470.74, 18,708 and 3,704.56 is: 5,557.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,470.74 : 18,708 = 3,704.56 : x
  2. Step 2: Convert to fraction form
    12,470.74/18,708 = 3,704.56/x
  3. Step 3: Cross multiply
    12,470.74x = 18,708 × 3,704.56
  4. Step 4: Simplify right side
    12,470.74x = 69,304,908.48
  5. Step 5: Solve for x
    x = 69,304,908.48/12,470.74
  6. Step 6: Final answer
    x = 5,557.40

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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.