Home / 12,126,440.30-18,189,660.45-10,496,687.90

Finding the Fourth Proportional to 12,126,440.30, 18,189,660.45 and 10,496,687.90

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Solution

The fourth proportional to 12,126,440.30, 18,189,660.45 and 10,496,687.90 is: 15,745,031.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,126,440.30 : 18,189,660.45 = 10,496,687.90 : x
  2. Step 2: Convert to fraction form
    12,126,440.30/18,189,660.45 = 10,496,687.90/x
  3. Step 3: Cross multiply
    12,126,440.30x = 18,189,660.45 × 10,496,687.90
  4. Step 4: Simplify right side
    12,126,440.30x = 190,931,188,750,623.56
  5. Step 5: Solve for x
    x = 190,931,188,750,623.56/12,126,440.30
  6. Step 6: Final answer
    x = 15,745,031.85

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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.