Home / 22,209.28-30,649.44-15,138.88

Finding the Fourth Proportional to 22,209.28, 30,649.44 and 15,138.88

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Solution

The fourth proportional to 22,209.28, 30,649.44 and 15,138.88 is: 20,892.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,209.28 : 30,649.44 = 15,138.88 : x
  2. Step 2: Convert to fraction form
    22,209.28/30,649.44 = 15,138.88/x
  3. Step 3: Cross multiply
    22,209.28x = 30,649.44 × 15,138.88
  4. Step 4: Simplify right side
    22,209.28x = 463,998,194.23
  5. Step 5: Solve for x
    x = 463,998,194.23/22,209.28
  6. Step 6: Final answer
    x = 20,892.09

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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.