Home / 20,126.97-27,776.97-11,176.20

Finding the Fourth Proportional to 20,126.97, 27,776.97 and 11,176.20

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Solution

The fourth proportional to 20,126.97, 27,776.97 and 11,176.20 is: 15,424.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.97 : 27,776.97 = 11,176.20 : x
  2. Step 2: Convert to fraction form
    20,126.97/27,776.97 = 11,176.20/x
  3. Step 3: Cross multiply
    20,126.97x = 27,776.97 × 11,176.20
  4. Step 4: Simplify right side
    20,126.97x = 310,440,972.11
  5. Step 5: Solve for x
    x = 310,440,972.11/20,126.97
  6. Step 6: Final answer
    x = 15,424.13

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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.