Home / 12,655.38-18,977.16-7,391.91

Finding the Fourth Proportional to 12,655.38, 18,977.16 and 7,391.91

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Solution

The fourth proportional to 12,655.38, 18,977.16 and 7,391.91 is: 11,084.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,655.38 : 18,977.16 = 7,391.91 : x
  2. Step 2: Convert to fraction form
    12,655.38/18,977.16 = 7,391.91/x
  3. Step 3: Cross multiply
    12,655.38x = 18,977.16 × 7,391.91
  4. Step 4: Simplify right side
    12,655.38x = 140,277,458.78
  5. Step 5: Solve for x
    x = 140,277,458.78/12,655.38
  6. Step 6: Final answer
    x = 11,084.41

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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.