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Finding the Fourth Proportional to 19,062.40, 28,550.40 and 11,286.40

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Solution

The fourth proportional to 19,062.40, 28,550.40 and 11,286.40 is: 16,904.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,062.40 : 28,550.40 = 11,286.40 : x
  2. Step 2: Convert to fraction form
    19,062.40/28,550.40 = 11,286.40/x
  3. Step 3: Cross multiply
    19,062.40x = 28,550.40 × 11,286.40
  4. Step 4: Simplify right side
    19,062.40x = 322,231,234.56
  5. Step 5: Solve for x
    x = 322,231,234.56/19,062.40
  6. Step 6: Final answer
    x = 16,904.02

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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.