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Finding the Fourth Proportional to 27,489.97, 37,935.89 and 15,553.30

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Solution

The fourth proportional to 27,489.97, 37,935.89 and 15,553.30 is: 21,463.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,489.97 : 37,935.89 = 15,553.30 : x
  2. Step 2: Convert to fraction form
    27,489.97/37,935.89 = 15,553.30/x
  3. Step 3: Cross multiply
    27,489.97x = 37,935.89 × 15,553.30
  4. Step 4: Simplify right side
    27,489.97x = 590,028,277.94
  5. Step 5: Solve for x
    x = 590,028,277.94/27,489.97
  6. Step 6: Final answer
    x = 21,463.40

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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.