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Finding the Fourth Proportional to 20,472.17, 30,707.03 and 12,043.41

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Solution

The fourth proportional to 20,472.17, 30,707.03 and 12,043.41 is: 18,064.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472.17 : 30,707.03 = 12,043.41 : x
  2. Step 2: Convert to fraction form
    20,472.17/30,707.03 = 12,043.41/x
  3. Step 3: Cross multiply
    20,472.17x = 30,707.03 × 12,043.41
  4. Step 4: Simplify right side
    20,472.17x = 369,817,267.13
  5. Step 5: Solve for x
    x = 369,817,267.13/20,472.17
  6. Step 6: Final answer
    x = 18,064.39

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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.