Home / 21,324.26-31,986.39-10,929.38

Finding the Fourth Proportional to 21,324.26, 31,986.39 and 10,929.38

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Solution

The fourth proportional to 21,324.26, 31,986.39 and 10,929.38 is: 16,394.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,324.26 : 31,986.39 = 10,929.38 : x
  2. Step 2: Convert to fraction form
    21,324.26/31,986.39 = 10,929.38/x
  3. Step 3: Cross multiply
    21,324.26x = 31,986.39 × 10,929.38
  4. Step 4: Simplify right side
    21,324.26x = 349,591,411.14
  5. Step 5: Solve for x
    x = 349,591,411.14/21,324.26
  6. Step 6: Final answer
    x = 16,394.07

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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.