Home / 21,208.08-29,268-11,778.42

Finding the Fourth Proportional to 21,208.08, 29,268 and 11,778.42

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Solution

The fourth proportional to 21,208.08, 29,268 and 11,778.42 is: 16,254.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,208.08 : 29,268 = 11,778.42 : x
  2. Step 2: Convert to fraction form
    21,208.08/29,268 = 11,778.42/x
  3. Step 3: Cross multiply
    21,208.08x = 29,268 × 11,778.42
  4. Step 4: Simplify right side
    21,208.08x = 344,730,796.56
  5. Step 5: Solve for x
    x = 344,730,796.56/21,208.08
  6. Step 6: Final answer
    x = 16,254.69

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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.