Home / 20,147-27,803.36-11,072.24

Finding the Fourth Proportional to 20,147, 27,803.36 and 11,072.24

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Solution

The fourth proportional to 20,147, 27,803.36 and 11,072.24 is: 15,279.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,147 : 27,803.36 = 11,072.24 : x
  2. Step 2: Convert to fraction form
    20,147/27,803.36 = 11,072.24/x
  3. Step 3: Cross multiply
    20,147x = 27,803.36 × 11,072.24
  4. Step 4: Simplify right side
    20,147x = 307,845,419.37
  5. Step 5: Solve for x
    x = 307,845,419.37/20,147
  6. Step 6: Final answer
    x = 15,279.96

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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.