Home / 27,178.07-40,758.62-13,129.38

Finding the Fourth Proportional to 27,178.07, 40,758.62 and 13,129.38

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Solution

The fourth proportional to 27,178.07, 40,758.62 and 13,129.38 is: 19,689.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,178.07 : 40,758.62 = 13,129.38 : x
  2. Step 2: Convert to fraction form
    27,178.07/40,758.62 = 13,129.38/x
  3. Step 3: Cross multiply
    27,178.07x = 40,758.62 × 13,129.38
  4. Step 4: Simplify right side
    27,178.07x = 535,135,344.61
  5. Step 5: Solve for x
    x = 535,135,344.61/27,178.07
  6. Step 6: Final answer
    x = 19,689.97

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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.