Home / 12,728.66-19,099.07-6,151.19

Finding the Fourth Proportional to 12,728.66, 19,099.07 and 6,151.19

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Solution

The fourth proportional to 12,728.66, 19,099.07 and 6,151.19 is: 9,229.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,728.66 : 19,099.07 = 6,151.19 : x
  2. Step 2: Convert to fraction form
    12,728.66/19,099.07 = 6,151.19/x
  3. Step 3: Cross multiply
    12,728.66x = 19,099.07 × 6,151.19
  4. Step 4: Simplify right side
    12,728.66x = 117,481,977.64
  5. Step 5: Solve for x
    x = 117,481,977.64/12,728.66
  6. Step 6: Final answer
    x = 9,229.72

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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.