Home / 15,211.24-20,974.96-9,896.20

Finding the Fourth Proportional to 15,211.24, 20,974.96 and 9,896.20

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Solution

The fourth proportional to 15,211.24, 20,974.96 and 9,896.20 is: 13,645.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,211.24 : 20,974.96 = 9,896.20 : x
  2. Step 2: Convert to fraction form
    15,211.24/20,974.96 = 9,896.20/x
  3. Step 3: Cross multiply
    15,211.24x = 20,974.96 × 9,896.20
  4. Step 4: Simplify right side
    15,211.24x = 207,572,399.15
  5. Step 5: Solve for x
    x = 207,572,399.15/15,211.24
  6. Step 6: Final answer
    x = 13,645.99

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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.