Home / 28,691.28-43,026.66-9,966.78

Finding the Fourth Proportional to 28,691.28, 43,026.66 and 9,966.78

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Solution

The fourth proportional to 28,691.28, 43,026.66 and 9,966.78 is: 14,946.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,691.28 : 43,026.66 = 9,966.78 : x
  2. Step 2: Convert to fraction form
    28,691.28/43,026.66 = 9,966.78/x
  3. Step 3: Cross multiply
    28,691.28x = 43,026.66 × 9,966.78
  4. Step 4: Simplify right side
    28,691.28x = 428,837,254.35
  5. Step 5: Solve for x
    x = 428,837,254.35/28,691.28
  6. Step 6: Final answer
    x = 14,946.61

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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.