Home / 28,122.08-38,793.12-18,039.30

Finding the Fourth Proportional to 28,122.08, 38,793.12 and 18,039.30

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Solution

The fourth proportional to 28,122.08, 38,793.12 and 18,039.30 is: 24,884.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,122.08 : 38,793.12 = 18,039.30 : x
  2. Step 2: Convert to fraction form
    28,122.08/38,793.12 = 18,039.30/x
  3. Step 3: Cross multiply
    28,122.08x = 38,793.12 × 18,039.30
  4. Step 4: Simplify right side
    28,122.08x = 699,800,729.62
  5. Step 5: Solve for x
    x = 699,800,729.62/28,122.08
  6. Step 6: Final answer
    x = 24,884.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.