Home / 15,121.12-20,853.16-9,454.04

Finding the Fourth Proportional to 15,121.12, 20,853.16 and 9,454.04

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Solution

The fourth proportional to 15,121.12, 20,853.16 and 9,454.04 is: 13,037.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,121.12 : 20,853.16 = 9,454.04 : x
  2. Step 2: Convert to fraction form
    15,121.12/20,853.16 = 9,454.04/x
  3. Step 3: Cross multiply
    15,121.12x = 20,853.16 × 9,454.04
  4. Step 4: Simplify right side
    15,121.12x = 197,146,608.77
  5. Step 5: Solve for x
    x = 197,146,608.77/15,121.12
  6. Step 6: Final answer
    x = 13,037.83

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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.