Home / 11,990.38-17,990.76-6,437.24

Finding the Fourth Proportional to 11,990.38, 17,990.76 and 6,437.24

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Solution

The fourth proportional to 11,990.38, 17,990.76 and 6,437.24 is: 9,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,990.38 : 17,990.76 = 6,437.24 : x
  2. Step 2: Convert to fraction form
    11,990.38/17,990.76 = 6,437.24/x
  3. Step 3: Cross multiply
    11,990.38x = 17,990.76 × 6,437.24
  4. Step 4: Simplify right side
    11,990.38x = 115,810,839.90
  5. Step 5: Solve for x
    x = 115,810,839.90/11,990.38
  6. Step 6: Final answer
    x = 9,658.65

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1.5x scale

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.