Home / 20,540.72-30,812.61-5,749.45

Finding the Fourth Proportional to 20,540.72, 30,812.61 and 5,749.45

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Solution

The fourth proportional to 20,540.72, 30,812.61 and 5,749.45 is: 8,624.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,540.72 : 30,812.61 = 5,749.45 : x
  2. Step 2: Convert to fraction form
    20,540.72/30,812.61 = 5,749.45/x
  3. Step 3: Cross multiply
    20,540.72x = 30,812.61 × 5,749.45
  4. Step 4: Simplify right side
    20,540.72x = 177,155,560.56
  5. Step 5: Solve for x
    x = 177,155,560.56/20,540.72
  6. Step 6: Final answer
    x = 8,624.60

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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.