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Finding the Fourth Proportional to 21,607.97, 29,826.43 and 12,658.48

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Solution

The fourth proportional to 21,607.97, 29,826.43 and 12,658.48 is: 17,473.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,607.97 : 29,826.43 = 12,658.48 : x
  2. Step 2: Convert to fraction form
    21,607.97/29,826.43 = 12,658.48/x
  3. Step 3: Cross multiply
    21,607.97x = 29,826.43 × 12,658.48
  4. Step 4: Simplify right side
    21,607.97x = 377,557,161.41
  5. Step 5: Solve for x
    x = 377,557,161.41/21,607.97
  6. Step 6: Final answer
    x = 17,473.06

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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.