Home / 11,122.29-15,355.17-8,305.20

Finding the Fourth Proportional to 11,122.29, 15,355.17 and 8,305.20

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Solution

The fourth proportional to 11,122.29, 15,355.17 and 8,305.20 is: 11,465.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,122.29 : 15,355.17 = 8,305.20 : x
  2. Step 2: Convert to fraction form
    11,122.29/15,355.17 = 8,305.20/x
  3. Step 3: Cross multiply
    11,122.29x = 15,355.17 × 8,305.20
  4. Step 4: Simplify right side
    11,122.29x = 127,527,757.88
  5. Step 5: Solve for x
    x = 127,527,757.88/11,122.29
  6. Step 6: Final answer
    x = 11,465.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.