Home / 13,722.33-18,950.28-11,721.23

Finding the Fourth Proportional to 13,722.33, 18,950.28 and 11,721.23

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Solution

The fourth proportional to 13,722.33, 18,950.28 and 11,721.23 is: 16,186.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,722.33 : 18,950.28 = 11,721.23 : x
  2. Step 2: Convert to fraction form
    13,722.33/18,950.28 = 11,721.23/x
  3. Step 3: Cross multiply
    13,722.33x = 18,950.28 × 11,721.23
  4. Step 4: Simplify right side
    13,722.33x = 222,120,522.80
  5. Step 5: Solve for x
    x = 222,120,522.80/13,722.33
  6. Step 6: Final answer
    x = 16,186.79

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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.