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Finding the Fourth Proportional to 25,840.80, 38,759.04 and 8,305.92

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Solution

The fourth proportional to 25,840.80, 38,759.04 and 8,305.92 is: 12,458.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,840.80 : 38,759.04 = 8,305.92 : x
  2. Step 2: Convert to fraction form
    25,840.80/38,759.04 = 8,305.92/x
  3. Step 3: Cross multiply
    25,840.80x = 38,759.04 × 8,305.92
  4. Step 4: Simplify right side
    25,840.80x = 321,929,485.52
  5. Step 5: Solve for x
    x = 321,929,485.52/25,840.80
  6. Step 6: Final answer
    x = 12,458.19

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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.