Home / 20,280.44-30,417.33-7,129.73

Finding the Fourth Proportional to 20,280.44, 30,417.33 and 7,129.73

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Solution

The fourth proportional to 20,280.44, 30,417.33 and 7,129.73 is: 10,693.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,280.44 : 30,417.33 = 7,129.73 : x
  2. Step 2: Convert to fraction form
    20,280.44/30,417.33 = 7,129.73/x
  3. Step 3: Cross multiply
    20,280.44x = 30,417.33 × 7,129.73
  4. Step 4: Simplify right side
    20,280.44x = 216,867,350.22
  5. Step 5: Solve for x
    x = 216,867,350.22/20,280.44
  6. Step 6: Final answer
    x = 10,693.42

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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.