Home / 20,233.89-27,921.75-11,279.66

Finding the Fourth Proportional to 20,233.89, 27,921.75 and 11,279.66

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Solution

The fourth proportional to 20,233.89, 27,921.75 and 11,279.66 is: 15,565.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,233.89 : 27,921.75 = 11,279.66 : x
  2. Step 2: Convert to fraction form
    20,233.89/27,921.75 = 11,279.66/x
  3. Step 3: Cross multiply
    20,233.89x = 27,921.75 × 11,279.66
  4. Step 4: Simplify right side
    20,233.89x = 314,947,707.00
  5. Step 5: Solve for x
    x = 314,947,707.00/20,233.89
  6. Step 6: Final answer
    x = 15,565.36

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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.