Home / 38,426.40-57,639.60-20,711.70

Finding the Fourth Proportional to 38,426.40, 57,639.60 and 20,711.70

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Solution

The fourth proportional to 38,426.40, 57,639.60 and 20,711.70 is: 31,067.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,426.40 : 57,639.60 = 20,711.70 : x
  2. Step 2: Convert to fraction form
    38,426.40/57,639.60 = 20,711.70/x
  3. Step 3: Cross multiply
    38,426.40x = 57,639.60 × 20,711.70
  4. Step 4: Simplify right side
    38,426.40x = 1,193,814,103.32
  5. Step 5: Solve for x
    x = 1,193,814,103.32/38,426.40
  6. Step 6: Final answer
    x = 31,067.55

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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.