Home / 20,385.62-30,581.48-7,236.89

Finding the Fourth Proportional to 20,385.62, 30,581.48 and 7,236.89

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Solution

The fourth proportional to 20,385.62, 30,581.48 and 7,236.89 is: 10,856.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,385.62 : 30,581.48 = 7,236.89 : x
  2. Step 2: Convert to fraction form
    20,385.62/30,581.48 = 7,236.89/x
  3. Step 3: Cross multiply
    20,385.62x = 30,581.48 × 7,236.89
  4. Step 4: Simplify right side
    20,385.62x = 221,314,806.80
  5. Step 5: Solve for x
    x = 221,314,806.80/20,385.62
  6. Step 6: Final answer
    x = 10,856.42

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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.