Home / 18,120.17-27,180.35-8,252.55

Finding the Fourth Proportional to 18,120.17, 27,180.35 and 8,252.55

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Solution

The fourth proportional to 18,120.17, 27,180.35 and 8,252.55 is: 12,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,120.17 : 27,180.35 = 8,252.55 : x
  2. Step 2: Convert to fraction form
    18,120.17/27,180.35 = 8,252.55/x
  3. Step 3: Cross multiply
    18,120.17x = 27,180.35 × 8,252.55
  4. Step 4: Simplify right side
    18,120.17x = 224,307,156.13
  5. Step 5: Solve for x
    x = 224,307,156.13/18,120.17
  6. Step 6: Final answer
    x = 12,378.87

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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.