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Finding the Fourth Proportional to 27,181.69, 40,800.17 and 18,748.78

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Solution

The fourth proportional to 27,181.69, 40,800.17 and 18,748.78 is: 28,142.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,181.69 : 40,800.17 = 18,748.78 : x
  2. Step 2: Convert to fraction form
    27,181.69/40,800.17 = 18,748.78/x
  3. Step 3: Cross multiply
    27,181.69x = 40,800.17 × 18,748.78
  4. Step 4: Simplify right side
    27,181.69x = 764,953,356.16
  5. Step 5: Solve for x
    x = 764,953,356.16/27,181.69
  6. Step 6: Final answer
    x = 28,142.23

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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.