Home / 22,838.26-31,519.78-12,768.78

Finding the Fourth Proportional to 22,838.26, 31,519.78 and 12,768.78

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Solution

The fourth proportional to 22,838.26, 31,519.78 and 12,768.78 is: 17,622.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,838.26 : 31,519.78 = 12,768.78 : x
  2. Step 2: Convert to fraction form
    22,838.26/31,519.78 = 12,768.78/x
  3. Step 3: Cross multiply
    22,838.26x = 31,519.78 × 12,768.78
  4. Step 4: Simplify right side
    22,838.26x = 402,469,136.47
  5. Step 5: Solve for x
    x = 402,469,136.47/22,838.26
  6. Step 6: Final answer
    x = 17,622.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.