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Finding the Fourth Proportional to 18,449.70, 27,688.86 and 7,357.38

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Solution

The fourth proportional to 18,449.70, 27,688.86 and 7,357.38 is: 11,041.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,449.70 : 27,688.86 = 7,357.38 : x
  2. Step 2: Convert to fraction form
    18,449.70/27,688.86 = 7,357.38/x
  3. Step 3: Cross multiply
    18,449.70x = 27,688.86 × 7,357.38
  4. Step 4: Simplify right side
    18,449.70x = 203,717,464.79
  5. Step 5: Solve for x
    x = 203,717,464.79/18,449.70
  6. Step 6: Final answer
    x = 11,041.78

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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.