Home / 20,858.85-31,274.36-10,838.97

Finding the Fourth Proportional to 20,858.85, 31,274.36 and 10,838.97

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Solution

The fourth proportional to 20,858.85, 31,274.36 and 10,838.97 is: 16,251.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,858.85 : 31,274.36 = 10,838.97 : x
  2. Step 2: Convert to fraction form
    20,858.85/31,274.36 = 10,838.97/x
  3. Step 3: Cross multiply
    20,858.85x = 31,274.36 × 10,838.97
  4. Step 4: Simplify right side
    20,858.85x = 338,981,836.26
  5. Step 5: Solve for x
    x = 338,981,836.26/20,858.85
  6. Step 6: Final answer
    x = 16,251.22

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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.