Home / 10,280,857.37-15,421,711.91-8,480,387.75

Finding the Fourth Proportional to 10,280,857.37, 15,421,711.91 and 8,480,387.75

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Solution

The fourth proportional to 10,280,857.37, 15,421,711.91 and 8,480,387.75 is: 12,720,932.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,280,857.37 : 15,421,711.91 = 8,480,387.75 : x
  2. Step 2: Convert to fraction form
    10,280,857.37/15,421,711.91 = 8,480,387.75/x
  3. Step 3: Cross multiply
    10,280,857.37x = 15,421,711.91 × 8,480,387.75
  4. Step 4: Simplify right side
    10,280,857.37x = 130,782,096,646,082.58
  5. Step 5: Solve for x
    x = 130,782,096,646,082.58/10,280,857.37
  6. Step 6: Final answer
    x = 12,720,932.90

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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.