Home / 23,169.11-31,979.09-15,222.11

Finding the Fourth Proportional to 23,169.11, 31,979.09 and 15,222.11

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Solution

The fourth proportional to 23,169.11, 31,979.09 and 15,222.11 is: 21,010.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,169.11 : 31,979.09 = 15,222.11 : x
  2. Step 2: Convert to fraction form
    23,169.11/31,979.09 = 15,222.11/x
  3. Step 3: Cross multiply
    23,169.11x = 31,979.09 × 15,222.11
  4. Step 4: Simplify right side
    23,169.11x = 486,789,103.84
  5. Step 5: Solve for x
    x = 486,789,103.84/23,169.11
  6. Step 6: Final answer
    x = 21,010.27

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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.