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Finding the Fourth Proportional to 18,310.59, 27,447.42 and 7,212.99

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Solution

The fourth proportional to 18,310.59, 27,447.42 and 7,212.99 is: 10,812.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,310.59 : 27,447.42 = 7,212.99 : x
  2. Step 2: Convert to fraction form
    18,310.59/27,447.42 = 7,212.99/x
  3. Step 3: Cross multiply
    18,310.59x = 27,447.42 × 7,212.99
  4. Step 4: Simplify right side
    18,310.59x = 197,977,965.99
  5. Step 5: Solve for x
    x = 197,977,965.99/18,310.59
  6. Step 6: Final answer
    x = 10,812.21

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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.