Home / 20,230.88-27,919.56-11,278.44

Finding the Fourth Proportional to 20,230.88, 27,919.56 and 11,278.44

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Solution

The fourth proportional to 20,230.88, 27,919.56 and 11,278.44 is: 15,564.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,230.88 : 27,919.56 = 11,278.44 : x
  2. Step 2: Convert to fraction form
    20,230.88/27,919.56 = 11,278.44/x
  3. Step 3: Cross multiply
    20,230.88x = 27,919.56 × 11,278.44
  4. Step 4: Simplify right side
    20,230.88x = 314,889,082.29
  5. Step 5: Solve for x
    x = 314,889,082.29/20,230.88
  6. Step 6: Final answer
    x = 15,564.77

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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.