Home / 12,131.76-18,180.54-9,655.56

Finding the Fourth Proportional to 12,131.76, 18,180.54 and 9,655.56

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Solution

The fourth proportional to 12,131.76, 18,180.54 and 9,655.56 is: 14,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,131.76 : 18,180.54 = 9,655.56 : x
  2. Step 2: Convert to fraction form
    12,131.76/18,180.54 = 9,655.56/x
  3. Step 3: Cross multiply
    12,131.76x = 18,180.54 × 9,655.56
  4. Step 4: Simplify right side
    12,131.76x = 175,543,294.80
  5. Step 5: Solve for x
    x = 175,543,294.80/12,131.76
  6. Step 6: Final answer
    x = 14,469.73

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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.