Home / 20,126.70-27,775.71-11,174.20

Finding the Fourth Proportional to 20,126.70, 27,775.71 and 11,174.20

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Solution

The fourth proportional to 20,126.70, 27,775.71 and 11,174.20 is: 15,420.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,126.70 : 27,775.71 = 11,174.20 : x
  2. Step 2: Convert to fraction form
    20,126.70/27,775.71 = 11,174.20/x
  3. Step 3: Cross multiply
    20,126.70x = 27,775.71 × 11,174.20
  4. Step 4: Simplify right side
    20,126.70x = 310,371,443.16
  5. Step 5: Solve for x
    x = 310,371,443.16/20,126.70
  6. Step 6: Final answer
    x = 15,420.88

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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.