Home / 12,451.05-18,652.68-8,278.47

Finding the Fourth Proportional to 12,451.05, 18,652.68 and 8,278.47

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Solution

The fourth proportional to 12,451.05, 18,652.68 and 8,278.47 is: 12,401.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,451.05 : 18,652.68 = 8,278.47 : x
  2. Step 2: Convert to fraction form
    12,451.05/18,652.68 = 8,278.47/x
  3. Step 3: Cross multiply
    12,451.05x = 18,652.68 × 8,278.47
  4. Step 4: Simplify right side
    12,451.05x = 154,415,651.80
  5. Step 5: Solve for x
    x = 154,415,651.80/12,451.05
  6. Step 6: Final answer
    x = 12,401.82

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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.