Home / 22,115.61-30,523.91-13,161.33

Finding the Fourth Proportional to 22,115.61, 30,523.91 and 13,161.33

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Solution

The fourth proportional to 22,115.61, 30,523.91 and 13,161.33 is: 18,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,115.61 : 30,523.91 = 13,161.33 : x
  2. Step 2: Convert to fraction form
    22,115.61/30,523.91 = 13,161.33/x
  3. Step 3: Cross multiply
    22,115.61x = 30,523.91 × 13,161.33
  4. Step 4: Simplify right side
    22,115.61x = 401,735,186.59
  5. Step 5: Solve for x
    x = 401,735,186.59/22,115.61
  6. Step 6: Final answer
    x = 18,165.23

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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.