Home / 21,210.92-29,268.42-11,778.20

Finding the Fourth Proportional to 21,210.92, 29,268.42 and 11,778.20

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Solution

The fourth proportional to 21,210.92, 29,268.42 and 11,778.20 is: 16,252.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.92 : 29,268.42 = 11,778.20 : x
  2. Step 2: Convert to fraction form
    21,210.92/29,268.42 = 11,778.20/x
  3. Step 3: Cross multiply
    21,210.92x = 29,268.42 × 11,778.20
  4. Step 4: Simplify right side
    21,210.92x = 344,729,304.44
  5. Step 5: Solve for x
    x = 344,729,304.44/21,210.92
  6. Step 6: Final answer
    x = 16,252.44

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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.