Home / 12,961.20-19,442.61-5,169.81

Finding the Fourth Proportional to 12,961.20, 19,442.61 and 5,169.81

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Solution

The fourth proportional to 12,961.20, 19,442.61 and 5,169.81 is: 7,755.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,961.20 : 19,442.61 = 5,169.81 : x
  2. Step 2: Convert to fraction form
    12,961.20/19,442.61 = 5,169.81/x
  3. Step 3: Cross multiply
    12,961.20x = 19,442.61 × 5,169.81
  4. Step 4: Simplify right side
    12,961.20x = 100,514,599.60
  5. Step 5: Solve for x
    x = 100,514,599.60/12,961.20
  6. Step 6: Final answer
    x = 7,755.04

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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.