Home / 10,116.36-15,175.35-7,747.85

Finding the Fourth Proportional to 10,116.36, 15,175.35 and 7,747.85

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Solution

The fourth proportional to 10,116.36, 15,175.35 and 7,747.85 is: 11,622.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,116.36 : 15,175.35 = 7,747.85 : x
  2. Step 2: Convert to fraction form
    10,116.36/15,175.35 = 7,747.85/x
  3. Step 3: Cross multiply
    10,116.36x = 15,175.35 × 7,747.85
  4. Step 4: Simplify right side
    10,116.36x = 117,576,373.44
  5. Step 5: Solve for x
    x = 117,576,373.44/10,116.36
  6. Step 6: Final answer
    x = 11,622.40

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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.