Home / 20,241.41-30,348.29-9,142.05

Finding the Fourth Proportional to 20,241.41, 30,348.29 and 9,142.05

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Solution

The fourth proportional to 20,241.41, 30,348.29 and 9,142.05 is: 13,706.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,241.41 : 30,348.29 = 9,142.05 : x
  2. Step 2: Convert to fraction form
    20,241.41/30,348.29 = 9,142.05/x
  3. Step 3: Cross multiply
    20,241.41x = 30,348.29 × 9,142.05
  4. Step 4: Simplify right side
    20,241.41x = 277,445,538.88
  5. Step 5: Solve for x
    x = 277,445,538.88/20,241.41
  6. Step 6: Final answer
    x = 13,706.83

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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.