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Finding the Fourth Proportional to 27,287.30, 40,892.55 and 20,212.10

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Solution

The fourth proportional to 27,287.30, 40,892.55 and 20,212.10 is: 30,289.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,287.30 : 40,892.55 = 20,212.10 : x
  2. Step 2: Convert to fraction form
    27,287.30/40,892.55 = 20,212.10/x
  3. Step 3: Cross multiply
    27,287.30x = 40,892.55 × 20,212.10
  4. Step 4: Simplify right side
    27,287.30x = 826,524,309.86
  5. Step 5: Solve for x
    x = 826,524,309.86/27,287.30
  6. Step 6: Final answer
    x = 30,289.71

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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.