Home / 10,185.80-15,278.73-2,791.36

Finding the Fourth Proportional to 10,185.80, 15,278.73 and 2,791.36

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Solution

The fourth proportional to 10,185.80, 15,278.73 and 2,791.36 is: 4,187.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,185.80 : 15,278.73 = 2,791.36 : x
  2. Step 2: Convert to fraction form
    10,185.80/15,278.73 = 2,791.36/x
  3. Step 3: Cross multiply
    10,185.80x = 15,278.73 × 2,791.36
  4. Step 4: Simplify right side
    10,185.80x = 42,648,444.40
  5. Step 5: Solve for x
    x = 42,648,444.40/10,185.80
  6. Step 6: Final answer
    x = 4,187.05

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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.