Home / 19,839.47-29,758.91-8,144.49

Finding the Fourth Proportional to 19,839.47, 29,758.91 and 8,144.49

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Solution

The fourth proportional to 19,839.47, 29,758.91 and 8,144.49 is: 12,216.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,839.47 : 29,758.91 = 8,144.49 : x
  2. Step 2: Convert to fraction form
    19,839.47/29,758.91 = 8,144.49/x
  3. Step 3: Cross multiply
    19,839.47x = 29,758.91 × 8,144.49
  4. Step 4: Simplify right side
    19,839.47x = 242,371,104.18
  5. Step 5: Solve for x
    x = 242,371,104.18/19,839.47
  6. Step 6: Final answer
    x = 12,216.61

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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.