Home / 20,434.25-28,199.28-11,481.74

Finding the Fourth Proportional to 20,434.25, 28,199.28 and 11,481.74

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Solution

The fourth proportional to 20,434.25, 28,199.28 and 11,481.74 is: 15,844.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,434.25 : 28,199.28 = 11,481.74 : x
  2. Step 2: Convert to fraction form
    20,434.25/28,199.28 = 11,481.74/x
  3. Step 3: Cross multiply
    20,434.25x = 28,199.28 × 11,481.74
  4. Step 4: Simplify right side
    20,434.25x = 323,776,660.15
  5. Step 5: Solve for x
    x = 323,776,660.15/20,434.25
  6. Step 6: Final answer
    x = 15,844.81

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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.