Home / 20,079.08-27,711.06-11,128.52

Finding the Fourth Proportional to 20,079.08, 27,711.06 and 11,128.52

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Solution

The fourth proportional to 20,079.08, 27,711.06 and 11,128.52 is: 15,358.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.08 : 27,711.06 = 11,128.52 : x
  2. Step 2: Convert to fraction form
    20,079.08/27,711.06 = 11,128.52/x
  3. Step 3: Cross multiply
    20,079.08x = 27,711.06 × 11,128.52
  4. Step 4: Simplify right side
    20,079.08x = 308,383,085.43
  5. Step 5: Solve for x
    x = 308,383,085.43/20,079.08
  6. Step 6: Final answer
    x = 15,358.43

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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.