Home / 21,671.21-29,902.46-12,108.04

Finding the Fourth Proportional to 21,671.21, 29,902.46 and 12,108.04

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Solution

The fourth proportional to 21,671.21, 29,902.46 and 12,108.04 is: 16,706.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,671.21 : 29,902.46 = 12,108.04 : x
  2. Step 2: Convert to fraction form
    21,671.21/29,902.46 = 12,108.04/x
  3. Step 3: Cross multiply
    21,671.21x = 29,902.46 × 12,108.04
  4. Step 4: Simplify right side
    21,671.21x = 362,060,084.78
  5. Step 5: Solve for x
    x = 362,060,084.78/21,671.21
  6. Step 6: Final answer
    x = 16,706.97

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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.