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Finding the Fourth Proportional to 18,654.04, 27,981.60 and 8,266.60

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Solution

The fourth proportional to 18,654.04, 27,981.60 and 8,266.60 is: 12,400.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,654.04 : 27,981.60 = 8,266.60 : x
  2. Step 2: Convert to fraction form
    18,654.04/27,981.60 = 8,266.60/x
  3. Step 3: Cross multiply
    18,654.04x = 27,981.60 × 8,266.60
  4. Step 4: Simplify right side
    18,654.04x = 231,312,694.56
  5. Step 5: Solve for x
    x = 231,312,694.56/18,654.04
  6. Step 6: Final answer
    x = 12,400.14

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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.