Home / 12,664.68-17,381.10-11,922.72

Finding the Fourth Proportional to 12,664.68, 17,381.10 and 11,922.72

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Solution

The fourth proportional to 12,664.68, 17,381.10 and 11,922.72 is: 16,362.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,664.68 : 17,381.10 = 11,922.72 : x
  2. Step 2: Convert to fraction form
    12,664.68/17,381.10 = 11,922.72/x
  3. Step 3: Cross multiply
    12,664.68x = 17,381.10 × 11,922.72
  4. Step 4: Simplify right side
    12,664.68x = 207,229,988.59
  5. Step 5: Solve for x
    x = 207,229,988.59/12,664.68
  6. Step 6: Final answer
    x = 16,362.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.