Home / 13,432.60-20,105.72-7,176.96

Finding the Fourth Proportional to 13,432.60, 20,105.72 and 7,176.96

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Solution

The fourth proportional to 13,432.60, 20,105.72 and 7,176.96 is: 10,742.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,432.60 : 20,105.72 = 7,176.96 : x
  2. Step 2: Convert to fraction form
    13,432.60/20,105.72 = 7,176.96/x
  3. Step 3: Cross multiply
    13,432.60x = 20,105.72 × 7,176.96
  4. Step 4: Simplify right side
    13,432.60x = 144,297,948.21
  5. Step 5: Solve for x
    x = 144,297,948.21/13,432.60
  6. Step 6: Final answer
    x = 10,742.37

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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.