Home / 21,112.92-31,660.14-10,022.80

Finding the Fourth Proportional to 21,112.92, 31,660.14 and 10,022.80

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Solution

The fourth proportional to 21,112.92, 31,660.14 and 10,022.80 is: 15,029.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,112.92 : 31,660.14 = 10,022.80 : x
  2. Step 2: Convert to fraction form
    21,112.92/31,660.14 = 10,022.80/x
  3. Step 3: Cross multiply
    21,112.92x = 31,660.14 × 10,022.80
  4. Step 4: Simplify right side
    21,112.92x = 317,323,251.19
  5. Step 5: Solve for x
    x = 317,323,251.19/21,112.92
  6. Step 6: Final answer
    x = 15,029.81

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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.