Home / 12,138.62-16,752.15-6,761.49

Finding the Fourth Proportional to 12,138.62, 16,752.15 and 6,761.49

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Solution

The fourth proportional to 12,138.62, 16,752.15 and 6,761.49 is: 9,331.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,138.62 : 16,752.15 = 6,761.49 : x
  2. Step 2: Convert to fraction form
    12,138.62/16,752.15 = 6,761.49/x
  3. Step 3: Cross multiply
    12,138.62x = 16,752.15 × 6,761.49
  4. Step 4: Simplify right side
    12,138.62x = 113,269,377.14
  5. Step 5: Solve for x
    x = 113,269,377.14/12,138.62
  6. Step 6: Final answer
    x = 9,331.32

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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.