Home / 10,906.30-16,359.45-8,281.90

Finding the Fourth Proportional to 10,906.30, 16,359.45 and 8,281.90

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Solution

The fourth proportional to 10,906.30, 16,359.45 and 8,281.90 is: 12,422.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,906.30 : 16,359.45 = 8,281.90 : x
  2. Step 2: Convert to fraction form
    10,906.30/16,359.45 = 8,281.90/x
  3. Step 3: Cross multiply
    10,906.30x = 16,359.45 × 8,281.90
  4. Step 4: Simplify right side
    10,906.30x = 135,487,328.96
  5. Step 5: Solve for x
    x = 135,487,328.96/10,906.30
  6. Step 6: Final answer
    x = 12,422.85

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1.5x scale

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.