Home / 11,144.88-15,382.20-6,428.52

Finding the Fourth Proportional to 11,144.88, 15,382.20 and 6,428.52

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Solution

The fourth proportional to 11,144.88, 15,382.20 and 6,428.52 is: 8,872.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,144.88 : 15,382.20 = 6,428.52 : x
  2. Step 2: Convert to fraction form
    11,144.88/15,382.20 = 6,428.52/x
  3. Step 3: Cross multiply
    11,144.88x = 15,382.20 × 6,428.52
  4. Step 4: Simplify right side
    11,144.88x = 98,884,780.34
  5. Step 5: Solve for x
    x = 98,884,780.34/11,144.88
  6. Step 6: Final answer
    x = 8,872.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.