Home / 20,712.60-31,066.10-8,241.80

Finding the Fourth Proportional to 20,712.60, 31,066.10 and 8,241.80

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Solution

The fourth proportional to 20,712.60, 31,066.10 and 8,241.80 is: 12,361.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,712.60 : 31,066.10 = 8,241.80 : x
  2. Step 2: Convert to fraction form
    20,712.60/31,066.10 = 8,241.80/x
  3. Step 3: Cross multiply
    20,712.60x = 31,066.10 × 8,241.80
  4. Step 4: Simplify right side
    20,712.60x = 256,040,582.98
  5. Step 5: Solve for x
    x = 256,040,582.98/20,712.60
  6. Step 6: Final answer
    x = 12,361.59

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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.