Home / 11,179.62-15,428.22-6,143.75

Finding the Fourth Proportional to 11,179.62, 15,428.22 and 6,143.75

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Solution

The fourth proportional to 11,179.62, 15,428.22 and 6,143.75 is: 8,478.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,179.62 : 15,428.22 = 6,143.75 : x
  2. Step 2: Convert to fraction form
    11,179.62/15,428.22 = 6,143.75/x
  3. Step 3: Cross multiply
    11,179.62x = 15,428.22 × 6,143.75
  4. Step 4: Simplify right side
    11,179.62x = 94,787,118.86
  5. Step 5: Solve for x
    x = 94,787,118.86/11,179.62
  6. Step 6: Final answer
    x = 8,478.56

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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.