Home / 38,129.78-52,617.36-21,134

Finding the Fourth Proportional to 38,129.78, 52,617.36 and 21,134

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Solution

The fourth proportional to 38,129.78, 52,617.36 and 21,134 is: 29,163.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,129.78 : 52,617.36 = 21,134 : x
  2. Step 2: Convert to fraction form
    38,129.78/52,617.36 = 21,134/x
  3. Step 3: Cross multiply
    38,129.78x = 52,617.36 × 21,134
  4. Step 4: Simplify right side
    38,129.78x = 1,112,015,286.24
  5. Step 5: Solve for x
    x = 1,112,015,286.24/38,129.78
  6. Step 6: Final answer
    x = 29,163.96

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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.