Home / 28,909.71-43,366.46-8,916.75

Finding the Fourth Proportional to 28,909.71, 43,366.46 and 8,916.75

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Solution

The fourth proportional to 28,909.71, 43,366.46 and 8,916.75 is: 13,375.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,909.71 : 43,366.46 = 8,916.75 : x
  2. Step 2: Convert to fraction form
    28,909.71/43,366.46 = 8,916.75/x
  3. Step 3: Cross multiply
    28,909.71x = 43,366.46 × 8,916.75
  4. Step 4: Simplify right side
    28,909.71x = 386,687,837.62
  5. Step 5: Solve for x
    x = 386,687,837.62/28,909.71
  6. Step 6: Final answer
    x = 13,375.71

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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.