Home / 20,001.60-29,968.56-8,891.28

Finding the Fourth Proportional to 20,001.60, 29,968.56 and 8,891.28

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Solution

The fourth proportional to 20,001.60, 29,968.56 and 8,891.28 is: 13,321.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,001.60 : 29,968.56 = 8,891.28 : x
  2. Step 2: Convert to fraction form
    20,001.60/29,968.56 = 8,891.28/x
  3. Step 3: Cross multiply
    20,001.60x = 29,968.56 × 8,891.28
  4. Step 4: Simplify right side
    20,001.60x = 266,458,858.16
  5. Step 5: Solve for x
    x = 266,458,858.16/20,001.60
  6. Step 6: Final answer
    x = 13,321.88

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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.