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Finding the Fourth Proportional to 29,663.56, 40,935.95 and 18,330.47

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Solution

The fourth proportional to 29,663.56, 40,935.95 and 18,330.47 is: 25,296.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,663.56 : 40,935.95 = 18,330.47 : x
  2. Step 2: Convert to fraction form
    29,663.56/40,935.95 = 18,330.47/x
  3. Step 3: Cross multiply
    29,663.56x = 40,935.95 × 18,330.47
  4. Step 4: Simplify right side
    29,663.56x = 750,375,044.54
  5. Step 5: Solve for x
    x = 750,375,044.54/29,663.56
  6. Step 6: Final answer
    x = 25,296.19

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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.