Home / 28,780.80-43,125.72-21,727.44

Finding the Fourth Proportional to 28,780.80, 43,125.72 and 21,727.44

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Solution

The fourth proportional to 28,780.80, 43,125.72 and 21,727.44 is: 32,556.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,780.80 : 43,125.72 = 21,727.44 : x
  2. Step 2: Convert to fraction form
    28,780.80/43,125.72 = 21,727.44/x
  3. Step 3: Cross multiply
    28,780.80x = 43,125.72 × 21,727.44
  4. Step 4: Simplify right side
    28,780.80x = 937,011,493.76
  5. Step 5: Solve for x
    x = 937,011,493.76/28,780.80
  6. Step 6: Final answer
    x = 32,556.83

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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.