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Finding the Fourth Proportional to 18,027.86, 27,041.78 and 10,285.88

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Solution

The fourth proportional to 18,027.86, 27,041.78 and 10,285.88 is: 15,428.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,027.86 : 27,041.78 = 10,285.88 : x
  2. Step 2: Convert to fraction form
    18,027.86/27,041.78 = 10,285.88/x
  3. Step 3: Cross multiply
    18,027.86x = 27,041.78 × 10,285.88
  4. Step 4: Simplify right side
    18,027.86x = 278,148,317.43
  5. Step 5: Solve for x
    x = 278,148,317.43/18,027.86
  6. Step 6: Final answer
    x = 15,428.81

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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.