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Finding the Fourth Proportional to 18,101.31, 27,151.93 and 4,953.79

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Solution

The fourth proportional to 18,101.31, 27,151.93 and 4,953.79 is: 7,430.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,101.31 : 27,151.93 = 4,953.79 : x
  2. Step 2: Convert to fraction form
    18,101.31/27,151.93 = 4,953.79/x
  3. Step 3: Cross multiply
    18,101.31x = 27,151.93 × 4,953.79
  4. Step 4: Simplify right side
    18,101.31x = 134,504,959.31
  5. Step 5: Solve for x
    x = 134,504,959.31/18,101.31
  6. Step 6: Final answer
    x = 7,430.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.