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Finding the Fourth Proportional to 27,801.97, 38,369.48 and 15,867.11

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Solution

The fourth proportional to 27,801.97, 38,369.48 and 15,867.11 is: 21,898.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,801.97 : 38,369.48 = 15,867.11 : x
  2. Step 2: Convert to fraction form
    27,801.97/38,369.48 = 15,867.11/x
  3. Step 3: Cross multiply
    27,801.97x = 38,369.48 × 15,867.11
  4. Step 4: Simplify right side
    27,801.97x = 608,812,776.39
  5. Step 5: Solve for x
    x = 608,812,776.39/27,801.97
  6. Step 6: Final answer
    x = 21,898.19

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1.5x scale

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.