Home / 21,939.14-32,908.68-7,148.04

Finding the Fourth Proportional to 21,939.14, 32,908.68 and 7,148.04

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Solution

The fourth proportional to 21,939.14, 32,908.68 and 7,148.04 is: 10,722.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,939.14 : 32,908.68 = 7,148.04 : x
  2. Step 2: Convert to fraction form
    21,939.14/32,908.68 = 7,148.04/x
  3. Step 3: Cross multiply
    21,939.14x = 32,908.68 × 7,148.04
  4. Step 4: Simplify right side
    21,939.14x = 235,232,560.99
  5. Step 5: Solve for x
    x = 235,232,560.99/21,939.14
  6. Step 6: Final answer
    x = 10,722.05

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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.