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Finding the Fourth Proportional to 28,446.87, 42,661.08 and 11,797.95

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Solution

The fourth proportional to 28,446.87, 42,661.08 and 11,797.95 is: 17,693.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,446.87 : 42,661.08 = 11,797.95 : x
  2. Step 2: Convert to fraction form
    28,446.87/42,661.08 = 11,797.95/x
  3. Step 3: Cross multiply
    28,446.87x = 42,661.08 × 11,797.95
  4. Step 4: Simplify right side
    28,446.87x = 503,313,288.79
  5. Step 5: Solve for x
    x = 503,313,288.79/28,446.87
  6. Step 6: Final answer
    x = 17,693.10

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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.