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Finding the Fourth Proportional to 18,098.70, 27,118.04 and 12,807.48

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Solution

The fourth proportional to 18,098.70, 27,118.04 and 12,807.48 is: 19,189.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,098.70 : 27,118.04 = 12,807.48 : x
  2. Step 2: Convert to fraction form
    18,098.70/27,118.04 = 12,807.48/x
  3. Step 3: Cross multiply
    18,098.70x = 27,118.04 × 12,807.48
  4. Step 4: Simplify right side
    18,098.70x = 347,313,754.94
  5. Step 5: Solve for x
    x = 347,313,754.94/18,098.70
  6. Step 6: Final answer
    x = 19,189.98

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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.