Home / 38,660.40-57,989.79-20,899.53

Finding the Fourth Proportional to 38,660.40, 57,989.79 and 20,899.53

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Solution

The fourth proportional to 38,660.40, 57,989.79 and 20,899.53 is: 31,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,660.40 : 57,989.79 = 20,899.53 : x
  2. Step 2: Convert to fraction form
    38,660.40/57,989.79 = 20,899.53/x
  3. Step 3: Cross multiply
    38,660.40x = 57,989.79 × 20,899.53
  4. Step 4: Simplify right side
    38,660.40x = 1,211,959,355.80
  5. Step 5: Solve for x
    x = 1,211,959,355.80/38,660.40
  6. Step 6: Final answer
    x = 31,348.86

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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.