Home / 12,265.12-18,385.38-5,249.71

Finding the Fourth Proportional to 12,265.12, 18,385.38 and 5,249.71

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Solution

The fourth proportional to 12,265.12, 18,385.38 and 5,249.71 is: 7,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,265.12 : 18,385.38 = 5,249.71 : x
  2. Step 2: Convert to fraction form
    12,265.12/18,385.38 = 5,249.71/x
  3. Step 3: Cross multiply
    12,265.12x = 18,385.38 × 5,249.71
  4. Step 4: Simplify right side
    12,265.12x = 96,517,936.22
  5. Step 5: Solve for x
    x = 96,517,936.22/12,265.12
  6. Step 6: Final answer
    x = 7,869.30

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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.