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Finding the Fourth Proportional to 18,565.98, 27,859.92 and 8,705.34

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Solution

The fourth proportional to 18,565.98, 27,859.92 and 8,705.34 is: 13,063.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,565.98 : 27,859.92 = 8,705.34 : x
  2. Step 2: Convert to fraction form
    18,565.98/27,859.92 = 8,705.34/x
  3. Step 3: Cross multiply
    18,565.98x = 27,859.92 × 8,705.34
  4. Step 4: Simplify right side
    18,565.98x = 242,530,075.97
  5. Step 5: Solve for x
    x = 242,530,075.97/18,565.98
  6. Step 6: Final answer
    x = 13,063.14

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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.