Home / 28,125.66-42,187.92-11,481.79

Finding the Fourth Proportional to 28,125.66, 42,187.92 and 11,481.79

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Solution

The fourth proportional to 28,125.66, 42,187.92 and 11,481.79 is: 17,222.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,125.66 : 42,187.92 = 11,481.79 : x
  2. Step 2: Convert to fraction form
    28,125.66/42,187.92 = 11,481.79/x
  3. Step 3: Cross multiply
    28,125.66x = 42,187.92 × 11,481.79
  4. Step 4: Simplify right side
    28,125.66x = 484,392,837.98
  5. Step 5: Solve for x
    x = 484,392,837.98/28,125.66
  6. Step 6: Final answer
    x = 17,222.45

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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.