Home / 12,150.70-16,767.92-7,115.86

Finding the Fourth Proportional to 12,150.70, 16,767.92 and 7,115.86

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Solution

The fourth proportional to 12,150.70, 16,767.92 and 7,115.86 is: 9,819.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,150.70 : 16,767.92 = 7,115.86 : x
  2. Step 2: Convert to fraction form
    12,150.70/16,767.92 = 7,115.86/x
  3. Step 3: Cross multiply
    12,150.70x = 16,767.92 × 7,115.86
  4. Step 4: Simplify right side
    12,150.70x = 119,318,171.21
  5. Step 5: Solve for x
    x = 119,318,171.21/12,150.70
  6. Step 6: Final answer
    x = 9,819.86

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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.