Home / 21,961.07-30,305.72-12,270.61

Finding the Fourth Proportional to 21,961.07, 30,305.72 and 12,270.61

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Solution

The fourth proportional to 21,961.07, 30,305.72 and 12,270.61 is: 16,933.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,961.07 : 30,305.72 = 12,270.61 : x
  2. Step 2: Convert to fraction form
    21,961.07/30,305.72 = 12,270.61/x
  3. Step 3: Cross multiply
    21,961.07x = 30,305.72 × 12,270.61
  4. Step 4: Simplify right side
    21,961.07x = 371,869,519.36
  5. Step 5: Solve for x
    x = 371,869,519.36/21,961.07
  6. Step 6: Final answer
    x = 16,933.12

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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.