Home / 12,406.91-17,122.30-7,101.61

Finding the Fourth Proportional to 12,406.91, 17,122.30 and 7,101.61

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Solution

The fourth proportional to 12,406.91, 17,122.30 and 7,101.61 is: 9,800.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,406.91 : 17,122.30 = 7,101.61 : x
  2. Step 2: Convert to fraction form
    12,406.91/17,122.30 = 7,101.61/x
  3. Step 3: Cross multiply
    12,406.91x = 17,122.30 × 7,101.61
  4. Step 4: Simplify right side
    12,406.91x = 121,595,896.90
  5. Step 5: Solve for x
    x = 121,595,896.90/12,406.91
  6. Step 6: Final answer
    x = 9,800.66

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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.