Home / 12,249.47-18,359.62-8,531.57

Finding the Fourth Proportional to 12,249.47, 18,359.62 and 8,531.57

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Solution

The fourth proportional to 12,249.47, 18,359.62 and 8,531.57 is: 12,787.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,249.47 : 18,359.62 = 8,531.57 : x
  2. Step 2: Convert to fraction form
    12,249.47/18,359.62 = 8,531.57/x
  3. Step 3: Cross multiply
    12,249.47x = 18,359.62 × 8,531.57
  4. Step 4: Simplify right side
    12,249.47x = 156,636,383.20
  5. Step 5: Solve for x
    x = 156,636,383.20/12,249.47
  6. Step 6: Final answer
    x = 12,787.20

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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.