Home / 20,079.67-27,710.13-11,127.28

Finding the Fourth Proportional to 20,079.67, 27,710.13 and 11,127.28

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Solution

The fourth proportional to 20,079.67, 27,710.13 and 11,127.28 is: 15,355.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.67 : 27,710.13 = 11,127.28 : x
  2. Step 2: Convert to fraction form
    20,079.67/27,710.13 = 11,127.28/x
  3. Step 3: Cross multiply
    20,079.67x = 27,710.13 × 11,127.28
  4. Step 4: Simplify right side
    20,079.67x = 308,338,375.35
  5. Step 5: Solve for x
    x = 308,338,375.35/20,079.67
  6. Step 6: Final answer
    x = 15,355.75

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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.