Home / 38,422.80-57,637.26-12,129.62

Finding the Fourth Proportional to 38,422.80, 57,637.26 and 12,129.62

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Solution

The fourth proportional to 38,422.80, 57,637.26 and 12,129.62 is: 18,195.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,422.80 : 57,637.26 = 12,129.62 : x
  2. Step 2: Convert to fraction form
    38,422.80/57,637.26 = 12,129.62/x
  3. Step 3: Cross multiply
    38,422.80x = 57,637.26 × 12,129.62
  4. Step 4: Simplify right side
    38,422.80x = 699,117,773.45
  5. Step 5: Solve for x
    x = 699,117,773.45/38,422.80
  6. Step 6: Final answer
    x = 18,195.39

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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.