Home / 21,180.82-29,229.26-11,490.14

Finding the Fourth Proportional to 21,180.82, 29,229.26 and 11,490.14

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Solution

The fourth proportional to 21,180.82, 29,229.26 and 11,490.14 is: 15,856.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,180.82 : 29,229.26 = 11,490.14 : x
  2. Step 2: Convert to fraction form
    21,180.82/29,229.26 = 11,490.14/x
  3. Step 3: Cross multiply
    21,180.82x = 29,229.26 × 11,490.14
  4. Step 4: Simplify right side
    21,180.82x = 335,848,172.08
  5. Step 5: Solve for x
    x = 335,848,172.08/21,180.82
  6. Step 6: Final answer
    x = 15,856.24

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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.