Home / 21,936.62-30,272.42-11,865.05

Finding the Fourth Proportional to 21,936.62, 30,272.42 and 11,865.05

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Solution

The fourth proportional to 21,936.62, 30,272.42 and 11,865.05 is: 16,373.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.62 : 30,272.42 = 11,865.05 : x
  2. Step 2: Convert to fraction form
    21,936.62/30,272.42 = 11,865.05/x
  3. Step 3: Cross multiply
    21,936.62x = 30,272.42 × 11,865.05
  4. Step 4: Simplify right side
    21,936.62x = 359,183,566.23
  5. Step 5: Solve for x
    x = 359,183,566.23/21,936.62
  6. Step 6: Final answer
    x = 16,373.70

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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.