Home / 38,379.32-57,520.60-20,565.80

Finding the Fourth Proportional to 38,379.32, 57,520.60 and 20,565.80

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Solution

The fourth proportional to 38,379.32, 57,520.60 and 20,565.80 is: 30,822.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,379.32 : 57,520.60 = 20,565.80 : x
  2. Step 2: Convert to fraction form
    38,379.32/57,520.60 = 20,565.80/x
  3. Step 3: Cross multiply
    38,379.32x = 57,520.60 × 20,565.80
  4. Step 4: Simplify right side
    38,379.32x = 1,182,956,816.46
  5. Step 5: Solve for x
    x = 1,182,956,816.46/38,379.32
  6. Step 6: Final answer
    x = 30,822.77

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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.