Home / 12,936.16-19,400.16-4,169.20

Finding the Fourth Proportional to 12,936.16, 19,400.16 and 4,169.20

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Solution

The fourth proportional to 12,936.16, 19,400.16 and 4,169.20 is: 6,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,936.16 : 19,400.16 = 4,169.20 : x
  2. Step 2: Convert to fraction form
    12,936.16/19,400.16 = 4,169.20/x
  3. Step 3: Cross multiply
    12,936.16x = 19,400.16 × 4,169.20
  4. Step 4: Simplify right side
    12,936.16x = 80,883,147.07
  5. Step 5: Solve for x
    x = 80,883,147.07/12,936.16
  6. Step 6: Final answer
    x = 6,252.49

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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.