Home / 12,540.84-18,814.38-3,775.92

Finding the Fourth Proportional to 12,540.84, 18,814.38 and 3,775.92

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Solution

The fourth proportional to 12,540.84, 18,814.38 and 3,775.92 is: 5,664.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,540.84 : 18,814.38 = 3,775.92 : x
  2. Step 2: Convert to fraction form
    12,540.84/18,814.38 = 3,775.92/x
  3. Step 3: Cross multiply
    12,540.84x = 18,814.38 × 3,775.92
  4. Step 4: Simplify right side
    12,540.84x = 71,041,593.73
  5. Step 5: Solve for x
    x = 71,041,593.73/12,540.84
  6. Step 6: Final answer
    x = 5,664.82

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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.