Home / 18,821.42-28,241.34-13,310.18

Finding the Fourth Proportional to 18,821.42, 28,241.34 and 13,310.18

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Solution

The fourth proportional to 18,821.42, 28,241.34 and 13,310.18 is: 19,971.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,821.42 : 28,241.34 = 13,310.18 : x
  2. Step 2: Convert to fraction form
    18,821.42/28,241.34 = 13,310.18/x
  3. Step 3: Cross multiply
    18,821.42x = 28,241.34 × 13,310.18
  4. Step 4: Simplify right side
    18,821.42x = 375,897,318.84
  5. Step 5: Solve for x
    x = 375,897,318.84/18,821.42
  6. Step 6: Final answer
    x = 19,971.78

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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.