Home / 21,936.66-32,908.41-7,142.09

Finding the Fourth Proportional to 21,936.66, 32,908.41 and 7,142.09

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Solution

The fourth proportional to 21,936.66, 32,908.41 and 7,142.09 is: 10,714.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,936.66 : 32,908.41 = 7,142.09 : x
  2. Step 2: Convert to fraction form
    21,936.66/32,908.41 = 7,142.09/x
  3. Step 3: Cross multiply
    21,936.66x = 32,908.41 × 7,142.09
  4. Step 4: Simplify right side
    21,936.66x = 235,034,846.54
  5. Step 5: Solve for x
    x = 235,034,846.54/21,936.66
  6. Step 6: Final answer
    x = 10,714.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.