Home / 21,829.05-30,122.94-12,397

Finding the Fourth Proportional to 21,829.05, 30,122.94 and 12,397

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Solution

The fourth proportional to 21,829.05, 30,122.94 and 12,397 is: 17,107.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,829.05 : 30,122.94 = 12,397 : x
  2. Step 2: Convert to fraction form
    21,829.05/30,122.94 = 12,397/x
  3. Step 3: Cross multiply
    21,829.05x = 30,122.94 × 12,397
  4. Step 4: Simplify right side
    21,829.05x = 373,434,087.18
  5. Step 5: Solve for x
    x = 373,434,087.18/21,829.05
  6. Step 6: Final answer
    x = 17,107.21

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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.