Home / 11,151.12-15,388.14-6,115.22

Finding the Fourth Proportional to 11,151.12, 15,388.14 and 6,115.22

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Solution

The fourth proportional to 11,151.12, 15,388.14 and 6,115.22 is: 8,438.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.12 : 15,388.14 = 6,115.22 : x
  2. Step 2: Convert to fraction form
    11,151.12/15,388.14 = 6,115.22/x
  3. Step 3: Cross multiply
    11,151.12x = 15,388.14 × 6,115.22
  4. Step 4: Simplify right side
    11,151.12x = 94,101,861.49
  5. Step 5: Solve for x
    x = 94,101,861.49/11,151.12
  6. Step 6: Final answer
    x = 8,438.78

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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.