Home / 11,411.14-15,738.69-9,820.43

Finding the Fourth Proportional to 11,411.14, 15,738.69 and 9,820.43

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Solution

The fourth proportional to 11,411.14, 15,738.69 and 9,820.43 is: 13,544.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,411.14 : 15,738.69 = 9,820.43 : x
  2. Step 2: Convert to fraction form
    11,411.14/15,738.69 = 9,820.43/x
  3. Step 3: Cross multiply
    11,411.14x = 15,738.69 × 9,820.43
  4. Step 4: Simplify right side
    11,411.14x = 154,560,703.44
  5. Step 5: Solve for x
    x = 154,560,703.44/11,411.14
  6. Step 6: Final answer
    x = 13,544.73

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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.