Home / 11,399.28-15,730.91-6,363.71

Finding the Fourth Proportional to 11,399.28, 15,730.91 and 6,363.71

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Solution

The fourth proportional to 11,399.28, 15,730.91 and 6,363.71 is: 8,781.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,399.28 : 15,730.91 = 6,363.71 : x
  2. Step 2: Convert to fraction form
    11,399.28/15,730.91 = 6,363.71/x
  3. Step 3: Cross multiply
    11,399.28x = 15,730.91 × 6,363.71
  4. Step 4: Simplify right side
    11,399.28x = 100,107,010.14
  5. Step 5: Solve for x
    x = 100,107,010.14/11,399.28
  6. Step 6: Final answer
    x = 8,781.87

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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.