Home / 38,243.80-57,381.90-18,512.20

Finding the Fourth Proportional to 38,243.80, 57,381.90 and 18,512.20

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Solution

The fourth proportional to 38,243.80, 57,381.90 and 18,512.20 is: 27,776.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,243.80 : 57,381.90 = 18,512.20 : x
  2. Step 2: Convert to fraction form
    38,243.80/57,381.90 = 18,512.20/x
  3. Step 3: Cross multiply
    38,243.80x = 57,381.90 × 18,512.20
  4. Step 4: Simplify right side
    38,243.80x = 1,062,265,209.18
  5. Step 5: Solve for x
    x = 1,062,265,209.18/38,243.80
  6. Step 6: Final answer
    x = 27,776.14

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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.