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Finding the Fourth Proportional to 17,376.56, 23,979.78 and 9,418.84

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Solution

The fourth proportional to 17,376.56, 23,979.78 and 9,418.84 is: 12,998.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,376.56 : 23,979.78 = 9,418.84 : x
  2. Step 2: Convert to fraction form
    17,376.56/23,979.78 = 9,418.84/x
  3. Step 3: Cross multiply
    17,376.56x = 23,979.78 × 9,418.84
  4. Step 4: Simplify right side
    17,376.56x = 225,861,711.06
  5. Step 5: Solve for x
    x = 225,861,711.06/17,376.56
  6. Step 6: Final answer
    x = 12,998.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.