Home / 27,139.20-40,708.80-12,376.95

Finding the Fourth Proportional to 27,139.20, 40,708.80 and 12,376.95

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Solution

The fourth proportional to 27,139.20, 40,708.80 and 12,376.95 is: 18,565.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,139.20 : 40,708.80 = 12,376.95 : x
  2. Step 2: Convert to fraction form
    27,139.20/40,708.80 = 12,376.95/x
  3. Step 3: Cross multiply
    27,139.20x = 40,708.80 × 12,376.95
  4. Step 4: Simplify right side
    27,139.20x = 503,850,782.16
  5. Step 5: Solve for x
    x = 503,850,782.16/27,139.20
  6. Step 6: Final answer
    x = 18,565.43

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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.