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Finding the Fourth Proportional to 18,647.84, 27,965.09 and 6,165.56

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Solution

The fourth proportional to 18,647.84, 27,965.09 and 6,165.56 is: 9,246.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,647.84 : 27,965.09 = 6,165.56 : x
  2. Step 2: Convert to fraction form
    18,647.84/27,965.09 = 6,165.56/x
  3. Step 3: Cross multiply
    18,647.84x = 27,965.09 × 6,165.56
  4. Step 4: Simplify right side
    18,647.84x = 172,420,300.47
  5. Step 5: Solve for x
    x = 172,420,300.47/18,647.84
  6. Step 6: Final answer
    x = 9,246.13

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1.5x scale

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.