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Finding the Fourth Proportional to 28,884.80, 43,327.20 and 25,659.20

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Solution

The fourth proportional to 28,884.80, 43,327.20 and 25,659.20 is: 38,488.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,884.80 : 43,327.20 = 25,659.20 : x
  2. Step 2: Convert to fraction form
    28,884.80/43,327.20 = 25,659.20/x
  3. Step 3: Cross multiply
    28,884.80x = 43,327.20 × 25,659.20
  4. Step 4: Simplify right side
    28,884.80x = 1,111,741,290.24
  5. Step 5: Solve for x
    x = 1,111,741,290.24/28,884.80
  6. Step 6: Final answer
    x = 38,488.80

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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.