Home / 10,261.44-15,381.64-7,791.03

Finding the Fourth Proportional to 10,261.44, 15,381.64 and 7,791.03

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Solution

The fourth proportional to 10,261.44, 15,381.64 and 7,791.03 is: 11,678.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,261.44 : 15,381.64 = 7,791.03 : x
  2. Step 2: Convert to fraction form
    10,261.44/15,381.64 = 7,791.03/x
  3. Step 3: Cross multiply
    10,261.44x = 15,381.64 × 7,791.03
  4. Step 4: Simplify right side
    10,261.44x = 119,838,818.69
  5. Step 5: Solve for x
    x = 119,838,818.69/10,261.44
  6. Step 6: Final answer
    x = 11,678.56

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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.