Home / 21,680.24-29,919.31-12,248.60

Finding the Fourth Proportional to 21,680.24, 29,919.31 and 12,248.60

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Solution

The fourth proportional to 21,680.24, 29,919.31 and 12,248.60 is: 16,903.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,680.24 : 29,919.31 = 12,248.60 : x
  2. Step 2: Convert to fraction form
    21,680.24/29,919.31 = 12,248.60/x
  3. Step 3: Cross multiply
    21,680.24x = 29,919.31 × 12,248.60
  4. Step 4: Simplify right side
    21,680.24x = 366,469,480.25
  5. Step 5: Solve for x
    x = 366,469,480.25/21,680.24
  6. Step 6: Final answer
    x = 16,903.39

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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.