Home / 10,520,321.20-15,768,040.20-5,469,031.60

Finding the Fourth Proportional to 10,520,321.20, 15,768,040.20 and 5,469,031.60

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Solution

The fourth proportional to 10,520,321.20, 15,768,040.20 and 5,469,031.60 is: 8,197,079.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,520,321.20 : 15,768,040.20 = 5,469,031.60 : x
  2. Step 2: Convert to fraction form
    10,520,321.20/15,768,040.20 = 5,469,031.60/x
  3. Step 3: Cross multiply
    10,520,321.20x = 15,768,040.20 × 5,469,031.60
  4. Step 4: Simplify right side
    10,520,321.20x = 86,235,910,123,870.31
  5. Step 5: Solve for x
    x = 86,235,910,123,870.31/10,520,321.20
  6. Step 6: Final answer
    x = 8,197,079.58

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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.