Home / 13,765.05-18,995.82-7,797.87

Finding the Fourth Proportional to 13,765.05, 18,995.82 and 7,797.87

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Solution

The fourth proportional to 13,765.05, 18,995.82 and 7,797.87 is: 10,761.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.05 : 18,995.82 = 7,797.87 : x
  2. Step 2: Convert to fraction form
    13,765.05/18,995.82 = 7,797.87/x
  3. Step 3: Cross multiply
    13,765.05x = 18,995.82 × 7,797.87
  4. Step 4: Simplify right side
    13,765.05x = 148,126,934.90
  5. Step 5: Solve for x
    x = 148,126,934.90/13,765.05
  6. Step 6: Final answer
    x = 10,761.09

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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.