Home / 20,433.28-28,197.48-11,358.04

Finding the Fourth Proportional to 20,433.28, 28,197.48 and 11,358.04

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Solution

The fourth proportional to 20,433.28, 28,197.48 and 11,358.04 is: 15,673.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,433.28 : 28,197.48 = 11,358.04 : x
  2. Step 2: Convert to fraction form
    20,433.28/28,197.48 = 11,358.04/x
  3. Step 3: Cross multiply
    20,433.28x = 28,197.48 × 11,358.04
  4. Step 4: Simplify right side
    20,433.28x = 320,268,105.74
  5. Step 5: Solve for x
    x = 320,268,105.74/20,433.28
  6. Step 6: Final answer
    x = 15,673.85

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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.