Home / 28,166.67-38,872.71-15,591.42

Finding the Fourth Proportional to 28,166.67, 38,872.71 and 15,591.42

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Solution

The fourth proportional to 28,166.67, 38,872.71 and 15,591.42 is: 21,517.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,166.67 : 38,872.71 = 15,591.42 : x
  2. Step 2: Convert to fraction form
    28,166.67/38,872.71 = 15,591.42/x
  3. Step 3: Cross multiply
    28,166.67x = 38,872.71 × 15,591.42
  4. Step 4: Simplify right side
    28,166.67x = 606,080,748.15
  5. Step 5: Solve for x
    x = 606,080,748.15/28,166.67
  6. Step 6: Final answer
    x = 21,517.66

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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.