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Finding the Fourth Proportional to 18,701.20, 27,942.25 and 18,047.14

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Solution

The fourth proportional to 18,701.20, 27,942.25 and 18,047.14 is: 26,964.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.20 : 27,942.25 = 18,047.14 : x
  2. Step 2: Convert to fraction form
    18,701.20/27,942.25 = 18,047.14/x
  3. Step 3: Cross multiply
    18,701.20x = 27,942.25 × 18,047.14
  4. Step 4: Simplify right side
    18,701.20x = 504,277,697.67
  5. Step 5: Solve for x
    x = 504,277,697.67/18,701.20
  6. Step 6: Final answer
    x = 26,964.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.