Home / 19,872.77-27,426.35-11,375.59

Finding the Fourth Proportional to 19,872.77, 27,426.35 and 11,375.59

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Solution

The fourth proportional to 19,872.77, 27,426.35 and 11,375.59 is: 15,699.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,872.77 : 27,426.35 = 11,375.59 : x
  2. Step 2: Convert to fraction form
    19,872.77/27,426.35 = 11,375.59/x
  3. Step 3: Cross multiply
    19,872.77x = 27,426.35 × 11,375.59
  4. Step 4: Simplify right side
    19,872.77x = 311,990,860.11
  5. Step 5: Solve for x
    x = 311,990,860.11/19,872.77
  6. Step 6: Final answer
    x = 15,699.42

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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.