Home / 21,682.53-29,921.13-12,250.89

Finding the Fourth Proportional to 21,682.53, 29,921.13 and 12,250.89

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Solution

The fourth proportional to 21,682.53, 29,921.13 and 12,250.89 is: 16,905.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,682.53 : 29,921.13 = 12,250.89 : x
  2. Step 2: Convert to fraction form
    21,682.53/29,921.13 = 12,250.89/x
  3. Step 3: Cross multiply
    21,682.53x = 29,921.13 × 12,250.89
  4. Step 4: Simplify right side
    21,682.53x = 366,560,472.31
  5. Step 5: Solve for x
    x = 366,560,472.31/21,682.53
  6. Step 6: Final answer
    x = 16,905.80

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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.