Home / 15,876.28-21,910.26-9,163.14

Finding the Fourth Proportional to 15,876.28, 21,910.26 and 9,163.14

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Solution

The fourth proportional to 15,876.28, 21,910.26 and 9,163.14 is: 12,645.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,876.28 : 21,910.26 = 9,163.14 : x
  2. Step 2: Convert to fraction form
    15,876.28/21,910.26 = 9,163.14/x
  3. Step 3: Cross multiply
    15,876.28x = 21,910.26 × 9,163.14
  4. Step 4: Simplify right side
    15,876.28x = 200,766,779.82
  5. Step 5: Solve for x
    x = 200,766,779.82/15,876.28
  6. Step 6: Final answer
    x = 12,645.71

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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.