Home / 21,399.38-29,532.02-11,839.11

Finding the Fourth Proportional to 21,399.38, 29,532.02 and 11,839.11

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Solution

The fourth proportional to 21,399.38, 29,532.02 and 11,839.11 is: 16,338.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,399.38 : 29,532.02 = 11,839.11 : x
  2. Step 2: Convert to fraction form
    21,399.38/29,532.02 = 11,839.11/x
  3. Step 3: Cross multiply
    21,399.38x = 29,532.02 × 11,839.11
  4. Step 4: Simplify right side
    21,399.38x = 349,632,833.30
  5. Step 5: Solve for x
    x = 349,632,833.30/21,399.38
  6. Step 6: Final answer
    x = 16,338.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.