Home / 22,115.76-30,520.17-13,164.45

Finding the Fourth Proportional to 22,115.76, 30,520.17 and 13,164.45

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Solution

The fourth proportional to 22,115.76, 30,520.17 and 13,164.45 is: 18,167.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.76 : 30,520.17 = 13,164.45 : x
  2. Step 2: Convert to fraction form
    22,115.76/30,520.17 = 13,164.45/x
  3. Step 3: Cross multiply
    22,115.76x = 30,520.17 × 13,164.45
  4. Step 4: Simplify right side
    22,115.76x = 401,781,251.96
  5. Step 5: Solve for x
    x = 401,781,251.96/22,115.76
  6. Step 6: Final answer
    x = 18,167.19

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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.