Home / 20,242.33-27,932.95-11,290.34

Finding the Fourth Proportional to 20,242.33, 27,932.95 and 11,290.34

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Solution

The fourth proportional to 20,242.33, 27,932.95 and 11,290.34 is: 15,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,242.33 : 27,932.95 = 11,290.34 : x
  2. Step 2: Convert to fraction form
    20,242.33/27,932.95 = 11,290.34/x
  3. Step 3: Cross multiply
    20,242.33x = 27,932.95 × 11,290.34
  4. Step 4: Simplify right side
    20,242.33x = 315,372,502.70
  5. Step 5: Solve for x
    x = 315,372,502.70/20,242.33
  6. Step 6: Final answer
    x = 15,579.85

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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.