Home / 13,765.13-18,996.14-7,796.78

Finding the Fourth Proportional to 13,765.13, 18,996.14 and 7,796.78

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Solution

The fourth proportional to 13,765.13, 18,996.14 and 7,796.78 is: 10,759.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,765.13 : 18,996.14 = 7,796.78 : x
  2. Step 2: Convert to fraction form
    13,765.13/18,996.14 = 7,796.78/x
  3. Step 3: Cross multiply
    13,765.13x = 18,996.14 × 7,796.78
  4. Step 4: Simplify right side
    13,765.13x = 148,108,724.43
  5. Step 5: Solve for x
    x = 148,108,724.43/13,765.13
  6. Step 6: Final answer
    x = 10,759.70

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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.