Home / 20,240.20-30,360.30-7,091.20

Finding the Fourth Proportional to 20,240.20, 30,360.30 and 7,091.20

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Solution

The fourth proportional to 20,240.20, 30,360.30 and 7,091.20 is: 10,636.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,240.20 : 30,360.30 = 7,091.20 : x
  2. Step 2: Convert to fraction form
    20,240.20/30,360.30 = 7,091.20/x
  3. Step 3: Cross multiply
    20,240.20x = 30,360.30 × 7,091.20
  4. Step 4: Simplify right side
    20,240.20x = 215,290,959.36
  5. Step 5: Solve for x
    x = 215,290,959.36/20,240.20
  6. Step 6: Final answer
    x = 10,636.80

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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.