Home / 20,498.88-30,753.12-8,805.60

Finding the Fourth Proportional to 20,498.88, 30,753.12 and 8,805.60

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Solution

The fourth proportional to 20,498.88, 30,753.12 and 8,805.60 is: 13,210.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,498.88 : 30,753.12 = 8,805.60 : x
  2. Step 2: Convert to fraction form
    20,498.88/30,753.12 = 8,805.60/x
  3. Step 3: Cross multiply
    20,498.88x = 30,753.12 × 8,805.60
  4. Step 4: Simplify right side
    20,498.88x = 270,799,673.47
  5. Step 5: Solve for x
    x = 270,799,673.47/20,498.88
  6. Step 6: Final answer
    x = 13,210.46

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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.