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Finding the Fourth Proportional to 18,314.26, 27,473.01 and 9,990.70

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Solution

The fourth proportional to 18,314.26, 27,473.01 and 9,990.70 is: 14,986.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,314.26 : 27,473.01 = 9,990.70 : x
  2. Step 2: Convert to fraction form
    18,314.26/27,473.01 = 9,990.70/x
  3. Step 3: Cross multiply
    18,314.26x = 27,473.01 × 9,990.70
  4. Step 4: Simplify right side
    18,314.26x = 274,474,601.01
  5. Step 5: Solve for x
    x = 274,474,601.01/18,314.26
  6. Step 6: Final answer
    x = 14,986.93

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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.