Home / 11,152.59-15,389.91-6,115.79

Finding the Fourth Proportional to 11,152.59, 15,389.91 and 6,115.79

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Solution

The fourth proportional to 11,152.59, 15,389.91 and 6,115.79 is: 8,439.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,152.59 : 15,389.91 = 6,115.79 : x
  2. Step 2: Convert to fraction form
    11,152.59/15,389.91 = 6,115.79/x
  3. Step 3: Cross multiply
    11,152.59x = 15,389.91 × 6,115.79
  4. Step 4: Simplify right side
    11,152.59x = 94,121,380.73
  5. Step 5: Solve for x
    x = 94,121,380.73/11,152.59
  6. Step 6: Final answer
    x = 8,439.42

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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.