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Finding the Fourth Proportional to 18,387.94, 27,560.04 and 6,687.58

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Solution

The fourth proportional to 18,387.94, 27,560.04 and 6,687.58 is: 10,023.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,387.94 : 27,560.04 = 6,687.58 : x
  2. Step 2: Convert to fraction form
    18,387.94/27,560.04 = 6,687.58/x
  3. Step 3: Cross multiply
    18,387.94x = 27,560.04 × 6,687.58
  4. Step 4: Simplify right side
    18,387.94x = 184,309,972.30
  5. Step 5: Solve for x
    x = 184,309,972.30/18,387.94
  6. Step 6: Final answer
    x = 10,023.42

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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.