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Finding the Fourth Proportional to 27,609.30, 38,101.29 and 15,672.99

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Solution

The fourth proportional to 27,609.30, 38,101.29 and 15,672.99 is: 21,628.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,609.30 : 38,101.29 = 15,672.99 : x
  2. Step 2: Convert to fraction form
    27,609.30/38,101.29 = 15,672.99/x
  3. Step 3: Cross multiply
    27,609.30x = 38,101.29 × 15,672.99
  4. Step 4: Simplify right side
    27,609.30x = 597,161,137.16
  5. Step 5: Solve for x
    x = 597,161,137.16/27,609.30
  6. Step 6: Final answer
    x = 21,628.99

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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.