Home / 20,399.96-30,599.33-5,609.76

Finding the Fourth Proportional to 20,399.96, 30,599.33 and 5,609.76

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Solution

The fourth proportional to 20,399.96, 30,599.33 and 5,609.76 is: 8,414.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,399.96 : 30,599.33 = 5,609.76 : x
  2. Step 2: Convert to fraction form
    20,399.96/30,599.33 = 5,609.76/x
  3. Step 3: Cross multiply
    20,399.96x = 30,599.33 × 5,609.76
  4. Step 4: Simplify right side
    20,399.96x = 171,654,869.41
  5. Step 5: Solve for x
    x = 171,654,869.41/20,399.96
  6. Step 6: Final answer
    x = 8,414.47

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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.