Home / 21,415.82-29,553.18-11,856.08

Finding the Fourth Proportional to 21,415.82, 29,553.18 and 11,856.08

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Solution

The fourth proportional to 21,415.82, 29,553.18 and 11,856.08 is: 16,361.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,415.82 : 29,553.18 = 11,856.08 : x
  2. Step 2: Convert to fraction form
    21,415.82/29,553.18 = 11,856.08/x
  3. Step 3: Cross multiply
    21,415.82x = 29,553.18 × 11,856.08
  4. Step 4: Simplify right side
    21,415.82x = 350,384,718.57
  5. Step 5: Solve for x
    x = 350,384,718.57/21,415.82
  6. Step 6: Final answer
    x = 16,361.03

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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.