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Finding the Fourth Proportional to 9,912.77, 14,870.97 and 8,080.14

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Solution

The fourth proportional to 9,912.77, 14,870.97 and 8,080.14 is: 12,121.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,912.77 : 14,870.97 = 8,080.14 : x
  2. Step 2: Convert to fraction form
    9,912.77/14,870.97 = 8,080.14/x
  3. Step 3: Cross multiply
    9,912.77x = 14,870.97 × 8,080.14
  4. Step 4: Simplify right side
    9,912.77x = 120,159,519.54
  5. Step 5: Solve for x
    x = 120,159,519.54/9,912.77
  6. Step 6: Final answer
    x = 12,121.70

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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.