Home / 21,936.46-30,272.20-11,864.90

Finding the Fourth Proportional to 21,936.46, 30,272.20 and 11,864.90

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Solution

The fourth proportional to 21,936.46, 30,272.20 and 11,864.90 is: 16,373.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.46 : 30,272.20 = 11,864.90 : x
  2. Step 2: Convert to fraction form
    21,936.46/30,272.20 = 11,864.90/x
  3. Step 3: Cross multiply
    21,936.46x = 30,272.20 × 11,864.90
  4. Step 4: Simplify right side
    21,936.46x = 359,176,625.78
  5. Step 5: Solve for x
    x = 359,176,625.78/21,936.46
  6. Step 6: Final answer
    x = 16,373.50

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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.