Home / 10,872,289.20-16,290,719.10-8,002,507.80

Finding the Fourth Proportional to 10,872,289.20, 16,290,719.10 and 8,002,507.80

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Solution

The fourth proportional to 10,872,289.20, 16,290,719.10 and 8,002,507.80 is: 11,990,722.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,872,289.20 : 16,290,719.10 = 8,002,507.80 : x
  2. Step 2: Convert to fraction form
    10,872,289.20/16,290,719.10 = 8,002,507.80/x
  3. Step 3: Cross multiply
    10,872,289.20x = 16,290,719.10 × 8,002,507.80
  4. Step 4: Simplify right side
    10,872,289.20x = 130,366,606,665,358.97
  5. Step 5: Solve for x
    x = 130,366,606,665,358.97/10,872,289.20
  6. Step 6: Final answer
    x = 11,990,722.86

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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.