Home / 11,151.11-15,388.52-6,115.41

Finding the Fourth Proportional to 11,151.11, 15,388.52 and 6,115.41

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Solution

The fourth proportional to 11,151.11, 15,388.52 and 6,115.41 is: 8,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,151.11 : 15,388.52 = 6,115.41 : x
  2. Step 2: Convert to fraction form
    11,151.11/15,388.52 = 6,115.41/x
  3. Step 3: Cross multiply
    11,151.11x = 15,388.52 × 6,115.41
  4. Step 4: Simplify right side
    11,151.11x = 94,107,001.57
  5. Step 5: Solve for x
    x = 94,107,001.57/11,151.11
  6. Step 6: Final answer
    x = 8,439.25

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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.