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Finding the Fourth Proportional to 17,939.94, 26,909.94 and 8,577.76

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Solution

The fourth proportional to 17,939.94, 26,909.94 and 8,577.76 is: 12,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,939.94 : 26,909.94 = 8,577.76 : x
  2. Step 2: Convert to fraction form
    17,939.94/26,909.94 = 8,577.76/x
  3. Step 3: Cross multiply
    17,939.94x = 26,909.94 × 8,577.76
  4. Step 4: Simplify right side
    17,939.94x = 230,827,006.93
  5. Step 5: Solve for x
    x = 230,827,006.93/17,939.94
  6. Step 6: Final answer
    x = 12,866.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.