Home / 19,839.40-29,759.06-8,144.38

Finding the Fourth Proportional to 19,839.40, 29,759.06 and 8,144.38

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Solution

The fourth proportional to 19,839.40, 29,759.06 and 8,144.38 is: 12,216.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.40 : 29,759.06 = 8,144.38 : x
  2. Step 2: Convert to fraction form
    19,839.40/29,759.06 = 8,144.38/x
  3. Step 3: Cross multiply
    19,839.40x = 29,759.06 × 8,144.38
  4. Step 4: Simplify right side
    19,839.40x = 242,369,093.08
  5. Step 5: Solve for x
    x = 242,369,093.08/19,839.40
  6. Step 6: Final answer
    x = 12,216.55

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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.