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Finding the Fourth Proportional to 22,287, 30,738.35 and 18,940.89

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Solution

The fourth proportional to 22,287, 30,738.35 and 18,940.89 is: 26,123.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,287 : 30,738.35 = 18,940.89 : x
  2. Step 2: Convert to fraction form
    22,287/30,738.35 = 18,940.89/x
  3. Step 3: Cross multiply
    22,287x = 30,738.35 × 18,940.89
  4. Step 4: Simplify right side
    22,287x = 582,211,706.13
  5. Step 5: Solve for x
    x = 582,211,706.13/22,287
  6. Step 6: Final answer
    x = 26,123.38

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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.