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Finding the Fourth Proportional to 14,008,659.20, 20,996,659.20 and 6,436,390.40

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Solution

The fourth proportional to 14,008,659.20, 20,996,659.20 and 6,436,390.40 is: 9,647,082.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,008,659.20 : 20,996,659.20 = 6,436,390.40 : x
  2. Step 2: Convert to fraction form
    14,008,659.20/20,996,659.20 = 6,436,390.40/x
  3. Step 3: Cross multiply
    14,008,659.20x = 20,996,659.20 × 6,436,390.40
  4. Step 4: Simplify right side
    14,008,659.20x = 135,142,695,706,951.69
  5. Step 5: Solve for x
    x = 135,142,695,706,951.69/14,008,659.20
  6. Step 6: Final answer
    x = 9,647,082.83

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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.