Home / 13,841.70-19,099.82-7,791.20

Finding the Fourth Proportional to 13,841.70, 19,099.82 and 7,791.20

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Solution

The fourth proportional to 13,841.70, 19,099.82 and 7,791.20 is: 10,750.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,841.70 : 19,099.82 = 7,791.20 : x
  2. Step 2: Convert to fraction form
    13,841.70/19,099.82 = 7,791.20/x
  3. Step 3: Cross multiply
    13,841.70x = 19,099.82 × 7,791.20
  4. Step 4: Simplify right side
    13,841.70x = 148,810,383.13
  5. Step 5: Solve for x
    x = 148,810,383.13/13,841.70
  6. Step 6: Final answer
    x = 10,750.87

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1.5x scale

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.