Home / 11,161.80-16,734.48-5,322.51

Finding the Fourth Proportional to 11,161.80, 16,734.48 and 5,322.51

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Solution

The fourth proportional to 11,161.80, 16,734.48 and 5,322.51 is: 7,979.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,161.80 : 16,734.48 = 5,322.51 : x
  2. Step 2: Convert to fraction form
    11,161.80/16,734.48 = 5,322.51/x
  3. Step 3: Cross multiply
    11,161.80x = 16,734.48 × 5,322.51
  4. Step 4: Simplify right side
    11,161.80x = 89,069,437.14
  5. Step 5: Solve for x
    x = 89,069,437.14/11,161.80
  6. Step 6: Final answer
    x = 7,979.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.