Home / 20,127.06-27,775.67-11,175.14

Finding the Fourth Proportional to 20,127.06, 27,775.67 and 11,175.14

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Solution

The fourth proportional to 20,127.06, 27,775.67 and 11,175.14 is: 15,421.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,127.06 : 27,775.67 = 11,175.14 : x
  2. Step 2: Convert to fraction form
    20,127.06/27,775.67 = 11,175.14/x
  3. Step 3: Cross multiply
    20,127.06x = 27,775.67 × 11,175.14
  4. Step 4: Simplify right side
    20,127.06x = 310,397,000.84
  5. Step 5: Solve for x
    x = 310,397,000.84/20,127.06
  6. Step 6: Final answer
    x = 15,421.87

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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.