Home / 20,091.20-30,141.60-9,694.40

Finding the Fourth Proportional to 20,091.20, 30,141.60 and 9,694.40

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Solution

The fourth proportional to 20,091.20, 30,141.60 and 9,694.40 is: 14,543.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,091.20 : 30,141.60 = 9,694.40 : x
  2. Step 2: Convert to fraction form
    20,091.20/30,141.60 = 9,694.40/x
  3. Step 3: Cross multiply
    20,091.20x = 30,141.60 × 9,694.40
  4. Step 4: Simplify right side
    20,091.20x = 292,204,727.04
  5. Step 5: Solve for x
    x = 292,204,727.04/20,091.20
  6. Step 6: Final answer
    x = 14,543.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.