Home / 20,833.20-28,763.25-18,591.21

Finding the Fourth Proportional to 20,833.20, 28,763.25 and 18,591.21

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Solution

The fourth proportional to 20,833.20, 28,763.25 and 18,591.21 is: 25,667.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,833.20 : 28,763.25 = 18,591.21 : x
  2. Step 2: Convert to fraction form
    20,833.20/28,763.25 = 18,591.21/x
  3. Step 3: Cross multiply
    20,833.20x = 28,763.25 × 18,591.21
  4. Step 4: Simplify right side
    20,833.20x = 534,743,621.03
  5. Step 5: Solve for x
    x = 534,743,621.03/20,833.20
  6. Step 6: Final answer
    x = 25,667.86

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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.