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Finding the Fourth Proportional to 21,660.84, 29,859.30 and 16,936.92

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Solution

The fourth proportional to 21,660.84, 29,859.30 and 16,936.92 is: 23,347.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,660.84 : 29,859.30 = 16,936.92 : x
  2. Step 2: Convert to fraction form
    21,660.84/29,859.30 = 16,936.92/x
  3. Step 3: Cross multiply
    21,660.84x = 29,859.30 × 16,936.92
  4. Step 4: Simplify right side
    21,660.84x = 505,724,575.36
  5. Step 5: Solve for x
    x = 505,724,575.36/21,660.84
  6. Step 6: Final answer
    x = 23,347.41

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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.