Home / 20,010.30-27,616.35-11,512.80

Finding the Fourth Proportional to 20,010.30, 27,616.35 and 11,512.80

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Solution

The fourth proportional to 20,010.30, 27,616.35 and 11,512.80 is: 15,888.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,010.30 : 27,616.35 = 11,512.80 : x
  2. Step 2: Convert to fraction form
    20,010.30/27,616.35 = 11,512.80/x
  3. Step 3: Cross multiply
    20,010.30x = 27,616.35 × 11,512.80
  4. Step 4: Simplify right side
    20,010.30x = 317,941,514.28
  5. Step 5: Solve for x
    x = 317,941,514.28/20,010.30
  6. Step 6: Final answer
    x = 15,888.89

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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.