Home / 21,081.11-29,089.46-11,649.11

Finding the Fourth Proportional to 21,081.11, 29,089.46 and 11,649.11

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Solution

The fourth proportional to 21,081.11, 29,089.46 and 11,649.11 is: 16,074.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,081.11 : 29,089.46 = 11,649.11 : x
  2. Step 2: Convert to fraction form
    21,081.11/29,089.46 = 11,649.11/x
  3. Step 3: Cross multiply
    21,081.11x = 29,089.46 × 11,649.11
  4. Step 4: Simplify right side
    21,081.11x = 338,866,261.14
  5. Step 5: Solve for x
    x = 338,866,261.14/21,081.11
  6. Step 6: Final answer
    x = 16,074.40

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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.