Home / 21,891.20-32,841.60-7,097.60

Finding the Fourth Proportional to 21,891.20, 32,841.60 and 7,097.60

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Solution

The fourth proportional to 21,891.20, 32,841.60 and 7,097.60 is: 10,647.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,891.20 : 32,841.60 = 7,097.60 : x
  2. Step 2: Convert to fraction form
    21,891.20/32,841.60 = 7,097.60/x
  3. Step 3: Cross multiply
    21,891.20x = 32,841.60 × 7,097.60
  4. Step 4: Simplify right side
    21,891.20x = 233,096,540.16
  5. Step 5: Solve for x
    x = 233,096,540.16/21,891.20
  6. Step 6: Final answer
    x = 10,647.96

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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.