Home / 21,169.53-29,215.27-11,738.09

Finding the Fourth Proportional to 21,169.53, 29,215.27 and 11,738.09

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Solution

The fourth proportional to 21,169.53, 29,215.27 and 11,738.09 is: 16,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,169.53 : 29,215.27 = 11,738.09 : x
  2. Step 2: Convert to fraction form
    21,169.53/29,215.27 = 11,738.09/x
  3. Step 3: Cross multiply
    21,169.53x = 29,215.27 × 11,738.09
  4. Step 4: Simplify right side
    21,169.53x = 342,931,512.33
  5. Step 5: Solve for x
    x = 342,931,512.33/21,169.53
  6. Step 6: Final answer
    x = 16,199.30

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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.