Home / 21,979.72-32,953.87-10,286.56

Finding the Fourth Proportional to 21,979.72, 32,953.87 and 10,286.56

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Solution

The fourth proportional to 21,979.72, 32,953.87 and 10,286.56 is: 15,422.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.72 : 32,953.87 = 10,286.56 : x
  2. Step 2: Convert to fraction form
    21,979.72/32,953.87 = 10,286.56/x
  3. Step 3: Cross multiply
    21,979.72x = 32,953.87 × 10,286.56
  4. Step 4: Simplify right side
    21,979.72x = 338,981,960.99
  5. Step 5: Solve for x
    x = 338,981,960.99/21,979.72
  6. Step 6: Final answer
    x = 15,422.49

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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.