Home / 21,165.72-29,207.97-11,734.08

Finding the Fourth Proportional to 21,165.72, 29,207.97 and 11,734.08

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Solution

The fourth proportional to 21,165.72, 29,207.97 and 11,734.08 is: 16,192.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,165.72 : 29,207.97 = 11,734.08 : x
  2. Step 2: Convert to fraction form
    21,165.72/29,207.97 = 11,734.08/x
  3. Step 3: Cross multiply
    21,165.72x = 29,207.97 × 11,734.08
  4. Step 4: Simplify right side
    21,165.72x = 342,728,656.62
  5. Step 5: Solve for x
    x = 342,728,656.62/21,165.72
  6. Step 6: Final answer
    x = 16,192.63

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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.