Home / 15,034.62-20,747.82-8,320.71

Finding the Fourth Proportional to 15,034.62, 20,747.82 and 8,320.71

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Solution

The fourth proportional to 15,034.62, 20,747.82 and 8,320.71 is: 11,482.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,034.62 : 20,747.82 = 8,320.71 : x
  2. Step 2: Convert to fraction form
    15,034.62/20,747.82 = 8,320.71/x
  3. Step 3: Cross multiply
    15,034.62x = 20,747.82 × 8,320.71
  4. Step 4: Simplify right side
    15,034.62x = 172,636,551.75
  5. Step 5: Solve for x
    x = 172,636,551.75/15,034.62
  6. Step 6: Final answer
    x = 11,482.60

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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.