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Finding the Fourth Proportional to 26,979, 37,235.88 and 15,801

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Solution

The fourth proportional to 26,979, 37,235.88 and 15,801 is: 21,808.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,979 : 37,235.88 = 15,801 : x
  2. Step 2: Convert to fraction form
    26,979/37,235.88 = 15,801/x
  3. Step 3: Cross multiply
    26,979x = 37,235.88 × 15,801
  4. Step 4: Simplify right side
    26,979x = 588,364,139.88
  5. Step 5: Solve for x
    x = 588,364,139.88/26,979
  6. Step 6: Final answer
    x = 21,808.23

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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.