Home / 20,079.80-27,710.33-11,127.41

Finding the Fourth Proportional to 20,079.80, 27,710.33 and 11,127.41

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Solution

The fourth proportional to 20,079.80, 27,710.33 and 11,127.41 is: 15,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,079.80 : 27,710.33 = 11,127.41 : x
  2. Step 2: Convert to fraction form
    20,079.80/27,710.33 = 11,127.41/x
  3. Step 3: Cross multiply
    20,079.80x = 27,710.33 × 11,127.41
  4. Step 4: Simplify right side
    20,079.80x = 308,344,008.96
  5. Step 5: Solve for x
    x = 308,344,008.96/20,079.80
  6. Step 6: Final answer
    x = 15,355.93

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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.