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Finding the Fourth Proportional to 18,087, 27,093.21 and 8,699.29

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Solution

The fourth proportional to 18,087, 27,093.21 and 8,699.29 is: 13,031.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,087 : 27,093.21 = 8,699.29 : x
  2. Step 2: Convert to fraction form
    18,087/27,093.21 = 8,699.29/x
  3. Step 3: Cross multiply
    18,087x = 27,093.21 × 8,699.29
  4. Step 4: Simplify right side
    18,087x = 235,691,690.82
  5. Step 5: Solve for x
    x = 235,691,690.82/18,087
  6. Step 6: Final answer
    x = 13,031.00

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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.