Home / 12,819.23-17,691.21-7,515.75

Finding the Fourth Proportional to 12,819.23, 17,691.21 and 7,515.75

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Solution

The fourth proportional to 12,819.23, 17,691.21 and 7,515.75 is: 10,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.23 : 17,691.21 = 7,515.75 : x
  2. Step 2: Convert to fraction form
    12,819.23/17,691.21 = 7,515.75/x
  3. Step 3: Cross multiply
    12,819.23x = 17,691.21 × 7,515.75
  4. Step 4: Simplify right side
    12,819.23x = 132,962,673.98
  5. Step 5: Solve for x
    x = 132,962,673.98/12,819.23
  6. Step 6: Final answer
    x = 10,372.13

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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.