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Finding the Fourth Proportional to 18,122.21, 27,191.15 and 9,808.10

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Solution

The fourth proportional to 18,122.21, 27,191.15 and 9,808.10 is: 14,716.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,122.21 : 27,191.15 = 9,808.10 : x
  2. Step 2: Convert to fraction form
    18,122.21/27,191.15 = 9,808.10/x
  3. Step 3: Cross multiply
    18,122.21x = 27,191.15 × 9,808.10
  4. Step 4: Simplify right side
    18,122.21x = 266,693,333.32
  5. Step 5: Solve for x
    x = 266,693,333.32/18,122.21
  6. Step 6: Final answer
    x = 14,716.38

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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.