Home / 28,479.01-42,694.20-20,132.77

Finding the Fourth Proportional to 28,479.01, 42,694.20 and 20,132.77

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Solution

The fourth proportional to 28,479.01, 42,694.20 and 20,132.77 is: 30,181.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,479.01 : 42,694.20 = 20,132.77 : x
  2. Step 2: Convert to fraction form
    28,479.01/42,694.20 = 20,132.77/x
  3. Step 3: Cross multiply
    28,479.01x = 42,694.20 × 20,132.77
  4. Step 4: Simplify right side
    28,479.01x = 859,552,508.93
  5. Step 5: Solve for x
    x = 859,552,508.93/28,479.01
  6. Step 6: Final answer
    x = 30,181.97

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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.