Home / 20,287.28-30,432.65-5,296.39

Finding the Fourth Proportional to 20,287.28, 30,432.65 and 5,296.39

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Solution

The fourth proportional to 20,287.28, 30,432.65 and 5,296.39 is: 7,945.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,287.28 : 30,432.65 = 5,296.39 : x
  2. Step 2: Convert to fraction form
    20,287.28/30,432.65 = 5,296.39/x
  3. Step 3: Cross multiply
    20,287.28x = 30,432.65 × 5,296.39
  4. Step 4: Simplify right side
    20,287.28x = 161,183,080.57
  5. Step 5: Solve for x
    x = 161,183,080.57/20,287.28
  6. Step 6: Final answer
    x = 7,945.03

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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.