Home / 18,129.20-27,194.12-4,981.48

Finding the Fourth Proportional to 18,129.20, 27,194.12 and 4,981.48

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Solution

The fourth proportional to 18,129.20, 27,194.12 and 4,981.48 is: 7,472.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,129.20 : 27,194.12 = 4,981.48 : x
  2. Step 2: Convert to fraction form
    18,129.20/27,194.12 = 4,981.48/x
  3. Step 3: Cross multiply
    18,129.20x = 27,194.12 × 4,981.48
  4. Step 4: Simplify right side
    18,129.20x = 135,466,964.90
  5. Step 5: Solve for x
    x = 135,466,964.90/18,129.20
  6. Step 6: Final answer
    x = 7,472.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.