Home / 13,654.56-18,845.12-7,991.04

Finding the Fourth Proportional to 13,654.56, 18,845.12 and 7,991.04

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Solution

The fourth proportional to 13,654.56, 18,845.12 and 7,991.04 is: 11,028.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,654.56 : 18,845.12 = 7,991.04 : x
  2. Step 2: Convert to fraction form
    13,654.56/18,845.12 = 7,991.04/x
  3. Step 3: Cross multiply
    13,654.56x = 18,845.12 × 7,991.04
  4. Step 4: Simplify right side
    13,654.56x = 150,592,107.72
  5. Step 5: Solve for x
    x = 150,592,107.72/13,654.56
  6. Step 6: Final answer
    x = 11,028.70

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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.