Home / 10,257.15-15,359.10-8,785.82

Finding the Fourth Proportional to 10,257.15, 15,359.10 and 8,785.82

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Solution

The fourth proportional to 10,257.15, 15,359.10 and 8,785.82 is: 13,155.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,257.15 : 15,359.10 = 8,785.82 : x
  2. Step 2: Convert to fraction form
    10,257.15/15,359.10 = 8,785.82/x
  3. Step 3: Cross multiply
    10,257.15x = 15,359.10 × 8,785.82
  4. Step 4: Simplify right side
    10,257.15x = 134,942,211.17
  5. Step 5: Solve for x
    x = 134,942,211.17/10,257.15
  6. Step 6: Final answer
    x = 13,155.92

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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.