Home / 13,445.13-18,546.57-11,163.56

Finding the Fourth Proportional to 13,445.13, 18,546.57 and 11,163.56

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Solution

The fourth proportional to 13,445.13, 18,546.57 and 11,163.56 is: 15,399.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,445.13 : 18,546.57 = 11,163.56 : x
  2. Step 2: Convert to fraction form
    13,445.13/18,546.57 = 11,163.56/x
  3. Step 3: Cross multiply
    13,445.13x = 18,546.57 × 11,163.56
  4. Step 4: Simplify right side
    13,445.13x = 207,045,654.26
  5. Step 5: Solve for x
    x = 207,045,654.26/13,445.13
  6. Step 6: Final answer
    x = 15,399.30

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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.