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Finding the Fourth Proportional to 9,990.43, 14,960.03 and 9,694.80

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Solution

The fourth proportional to 9,990.43, 14,960.03 and 9,694.80 is: 14,517.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,990.43 : 14,960.03 = 9,694.80 : x
  2. Step 2: Convert to fraction form
    9,990.43/14,960.03 = 9,694.80/x
  3. Step 3: Cross multiply
    9,990.43x = 14,960.03 × 9,694.80
  4. Step 4: Simplify right side
    9,990.43x = 145,034,450.37
  5. Step 5: Solve for x
    x = 145,034,450.37/9,990.43
  6. Step 6: Final answer
    x = 14,517.34

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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.