Home / 21,121.22-29,150.55-12,046.59

Finding the Fourth Proportional to 21,121.22, 29,150.55 and 12,046.59

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Solution

The fourth proportional to 21,121.22, 29,150.55 and 12,046.59 is: 16,626.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,121.22 : 29,150.55 = 12,046.59 : x
  2. Step 2: Convert to fraction form
    21,121.22/29,150.55 = 12,046.59/x
  3. Step 3: Cross multiply
    21,121.22x = 29,150.55 × 12,046.59
  4. Step 4: Simplify right side
    21,121.22x = 351,164,724.12
  5. Step 5: Solve for x
    x = 351,164,724.12/21,121.22
  6. Step 6: Final answer
    x = 16,626.16

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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.