Home / 15,215.14-20,990.40-9,546.04

Finding the Fourth Proportional to 15,215.14, 20,990.40 and 9,546.04

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Solution

The fourth proportional to 15,215.14, 20,990.40 and 9,546.04 is: 13,169.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,215.14 : 20,990.40 = 9,546.04 : x
  2. Step 2: Convert to fraction form
    15,215.14/20,990.40 = 9,546.04/x
  3. Step 3: Cross multiply
    15,215.14x = 20,990.40 × 9,546.04
  4. Step 4: Simplify right side
    15,215.14x = 200,375,093.06
  5. Step 5: Solve for x
    x = 200,375,093.06/15,215.14
  6. Step 6: Final answer
    x = 13,169.46

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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.