Home / 21,146.01-29,179.13-11,712.21

Finding the Fourth Proportional to 21,146.01, 29,179.13 and 11,712.21

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Solution

The fourth proportional to 21,146.01, 29,179.13 and 11,712.21 is: 16,161.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,146.01 : 29,179.13 = 11,712.21 : x
  2. Step 2: Convert to fraction form
    21,146.01/29,179.13 = 11,712.21/x
  3. Step 3: Cross multiply
    21,146.01x = 29,179.13 × 11,712.21
  4. Step 4: Simplify right side
    21,146.01x = 341,751,952.28
  5. Step 5: Solve for x
    x = 341,751,952.28/21,146.01
  6. Step 6: Final answer
    x = 16,161.54

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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.