Home / 27,140.82-40,715.10-8,422.47

Finding the Fourth Proportional to 27,140.82, 40,715.10 and 8,422.47

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Solution

The fourth proportional to 27,140.82, 40,715.10 and 8,422.47 is: 12,634.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,140.82 : 40,715.10 = 8,422.47 : x
  2. Step 2: Convert to fraction form
    27,140.82/40,715.10 = 8,422.47/x
  3. Step 3: Cross multiply
    27,140.82x = 40,715.10 × 8,422.47
  4. Step 4: Simplify right side
    27,140.82x = 342,921,708.30
  5. Step 5: Solve for x
    x = 342,921,708.30/27,140.82
  6. Step 6: Final answer
    x = 12,634.91

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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.