Home / 20,414.40-30,622.56-7,266.88

Finding the Fourth Proportional to 20,414.40, 30,622.56 and 7,266.88

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Solution

The fourth proportional to 20,414.40, 30,622.56 and 7,266.88 is: 10,900.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,414.40 : 30,622.56 = 7,266.88 : x
  2. Step 2: Convert to fraction form
    20,414.40/30,622.56 = 7,266.88/x
  3. Step 3: Cross multiply
    20,414.40x = 30,622.56 × 7,266.88
  4. Step 4: Simplify right side
    20,414.40x = 222,530,468.81
  5. Step 5: Solve for x
    x = 222,530,468.81/20,414.40
  6. Step 6: Final answer
    x = 10,900.66

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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.