Home / 18,115.95-27,143.18-8,760.38

Finding the Fourth Proportional to 18,115.95, 27,143.18 and 8,760.38

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Solution

The fourth proportional to 18,115.95, 27,143.18 and 8,760.38 is: 13,125.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,115.95 : 27,143.18 = 8,760.38 : x
  2. Step 2: Convert to fraction form
    18,115.95/27,143.18 = 8,760.38/x
  3. Step 3: Cross multiply
    18,115.95x = 27,143.18 × 8,760.38
  4. Step 4: Simplify right side
    18,115.95x = 237,784,476.24
  5. Step 5: Solve for x
    x = 237,784,476.24/18,115.95
  6. Step 6: Final answer
    x = 13,125.69

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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.