Home / 12,819.53-17,690.92-7,154.22

Finding the Fourth Proportional to 12,819.53, 17,690.92 and 7,154.22

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Solution

The fourth proportional to 12,819.53, 17,690.92 and 7,154.22 is: 9,872.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,819.53 : 17,690.92 = 7,154.22 : x
  2. Step 2: Convert to fraction form
    12,819.53/17,690.92 = 7,154.22/x
  3. Step 3: Cross multiply
    12,819.53x = 17,690.92 × 7,154.22
  4. Step 4: Simplify right side
    12,819.53x = 126,564,733.68
  5. Step 5: Solve for x
    x = 126,564,733.68/12,819.53
  6. Step 6: Final answer
    x = 9,872.81

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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.