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Finding the Fourth Proportional to 21,893.79, 30,211.24 and 12,333.41

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Solution

The fourth proportional to 21,893.79, 30,211.24 and 12,333.41 is: 17,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,893.79 : 30,211.24 = 12,333.41 : x
  2. Step 2: Convert to fraction form
    21,893.79/30,211.24 = 12,333.41/x
  3. Step 3: Cross multiply
    21,893.79x = 30,211.24 × 12,333.41
  4. Step 4: Simplify right side
    21,893.79x = 372,607,609.53
  5. Step 5: Solve for x
    x = 372,607,609.53/21,893.79
  6. Step 6: Final answer
    x = 17,018.87

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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.