Home / 21,016.75-29,003.22-11,585.11

Finding the Fourth Proportional to 21,016.75, 29,003.22 and 11,585.11

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Solution

The fourth proportional to 21,016.75, 29,003.22 and 11,585.11 is: 15,987.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,016.75 : 29,003.22 = 11,585.11 : x
  2. Step 2: Convert to fraction form
    21,016.75/29,003.22 = 11,585.11/x
  3. Step 3: Cross multiply
    21,016.75x = 29,003.22 × 11,585.11
  4. Step 4: Simplify right side
    21,016.75x = 336,005,494.05
  5. Step 5: Solve for x
    x = 336,005,494.05/21,016.75
  6. Step 6: Final answer
    x = 15,987.51

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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.