Home / 21,217.01-29,278.66-11,786.17

Finding the Fourth Proportional to 21,217.01, 29,278.66 and 11,786.17

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Solution

The fourth proportional to 21,217.01, 29,278.66 and 11,786.17 is: 16,264.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,217.01 : 29,278.66 = 11,786.17 : x
  2. Step 2: Convert to fraction form
    21,217.01/29,278.66 = 11,786.17/x
  3. Step 3: Cross multiply
    21,217.01x = 29,278.66 × 11,786.17
  4. Step 4: Simplify right side
    21,217.01x = 345,083,205.20
  5. Step 5: Solve for x
    x = 345,083,205.20/21,217.01
  6. Step 6: Final answer
    x = 16,264.46

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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.