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Finding the Fourth Proportional to 13,771,235.70, 20,656,853.55 and 12,259,581.30

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Solution

The fourth proportional to 13,771,235.70, 20,656,853.55 and 12,259,581.30 is: 18,389,371.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771,235.70 : 20,656,853.55 = 12,259,581.30 : x
  2. Step 2: Convert to fraction form
    13,771,235.70/20,656,853.55 = 12,259,581.30/x
  3. Step 3: Cross multiply
    13,771,235.70x = 20,656,853.55 × 12,259,581.30
  4. Step 4: Simplify right side
    13,771,235.70x = 253,244,375,498,418.62
  5. Step 5: Solve for x
    x = 253,244,375,498,418.62/13,771,235.70
  6. Step 6: Final answer
    x = 18,389,371.95

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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.