Home / 10,887.12-15,023.68-6,171.28

Finding the Fourth Proportional to 10,887.12, 15,023.68 and 6,171.28

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Solution

The fourth proportional to 10,887.12, 15,023.68 and 6,171.28 is: 8,516.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,887.12 : 15,023.68 = 6,171.28 : x
  2. Step 2: Convert to fraction form
    10,887.12/15,023.68 = 6,171.28/x
  3. Step 3: Cross multiply
    10,887.12x = 15,023.68 × 6,171.28
  4. Step 4: Simplify right side
    10,887.12x = 92,715,335.91
  5. Step 5: Solve for x
    x = 92,715,335.91/10,887.12
  6. Step 6: Final answer
    x = 8,516.06

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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.