Home / 26,400.78-39,601.17-8,870.61

Finding the Fourth Proportional to 26,400.78, 39,601.17 and 8,870.61

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Solution

The fourth proportional to 26,400.78, 39,601.17 and 8,870.61 is: 13,305.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,400.78 : 39,601.17 = 8,870.61 : x
  2. Step 2: Convert to fraction form
    26,400.78/39,601.17 = 8,870.61/x
  3. Step 3: Cross multiply
    26,400.78x = 39,601.17 × 8,870.61
  4. Step 4: Simplify right side
    26,400.78x = 351,286,534.61
  5. Step 5: Solve for x
    x = 351,286,534.61/26,400.78
  6. Step 6: Final answer
    x = 13,305.92

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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.