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Finding the Fourth Proportional to 27,694, 38,217.88 and 15,118.88

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Solution

The fourth proportional to 27,694, 38,217.88 and 15,118.88 is: 20,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,694 : 38,217.88 = 15,118.88 : x
  2. Step 2: Convert to fraction form
    27,694/38,217.88 = 15,118.88/x
  3. Step 3: Cross multiply
    27,694x = 38,217.88 × 15,118.88
  4. Step 4: Simplify right side
    27,694x = 577,811,541.57
  5. Step 5: Solve for x
    x = 577,811,541.57/27,694
  6. Step 6: Final answer
    x = 20,864.14

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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.