Home / 20,238.16-27,929.28-11,286

Finding the Fourth Proportional to 20,238.16, 27,929.28 and 11,286

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Solution

The fourth proportional to 20,238.16, 27,929.28 and 11,286 is: 15,575.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,238.16 : 27,929.28 = 11,286 : x
  2. Step 2: Convert to fraction form
    20,238.16/27,929.28 = 11,286/x
  3. Step 3: Cross multiply
    20,238.16x = 27,929.28 × 11,286
  4. Step 4: Simplify right side
    20,238.16x = 315,209,854.08
  5. Step 5: Solve for x
    x = 315,209,854.08/20,238.16
  6. Step 6: Final answer
    x = 15,575.03

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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.