Home / 28,766.64-43,212.84-20,499.78

Finding the Fourth Proportional to 28,766.64, 43,212.84 and 20,499.78

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Solution

The fourth proportional to 28,766.64, 43,212.84 and 20,499.78 is: 30,794.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,766.64 : 43,212.84 = 20,499.78 : x
  2. Step 2: Convert to fraction form
    28,766.64/43,212.84 = 20,499.78/x
  3. Step 3: Cross multiply
    28,766.64x = 43,212.84 × 20,499.78
  4. Step 4: Simplify right side
    28,766.64x = 885,853,913.66
  5. Step 5: Solve for x
    x = 885,853,913.66/28,766.64
  6. Step 6: Final answer
    x = 30,794.48

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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.