Home / 20,451.67-30,691.63-13,435.04

Finding the Fourth Proportional to 20,451.67, 30,691.63 and 13,435.04

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Solution

The fourth proportional to 20,451.67, 30,691.63 and 13,435.04 is: 20,161.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,451.67 : 30,691.63 = 13,435.04 : x
  2. Step 2: Convert to fraction form
    20,451.67/30,691.63 = 13,435.04/x
  3. Step 3: Cross multiply
    20,451.67x = 30,691.63 × 13,435.04
  4. Step 4: Simplify right side
    20,451.67x = 412,343,370.24
  5. Step 5: Solve for x
    x = 412,343,370.24/20,451.67
  6. Step 6: Final answer
    x = 20,161.85

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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.