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Finding the Fourth Proportional to 12,347.01, 18,520.92 and 4,554

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Solution

The fourth proportional to 12,347.01, 18,520.92 and 4,554 is: 6,831.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,347.01 : 18,520.92 = 4,554 : x
  2. Step 2: Convert to fraction form
    12,347.01/18,520.92 = 4,554/x
  3. Step 3: Cross multiply
    12,347.01x = 18,520.92 × 4,554
  4. Step 4: Simplify right side
    12,347.01x = 84,344,269.68
  5. Step 5: Solve for x
    x = 84,344,269.68/12,347.01
  6. Step 6: Final answer
    x = 6,831.15

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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.