Home / 13,387.24-18,474.89-8,081.03

Finding the Fourth Proportional to 13,387.24, 18,474.89 and 8,081.03

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Solution

The fourth proportional to 13,387.24, 18,474.89 and 8,081.03 is: 11,152.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,387.24 : 18,474.89 = 8,081.03 : x
  2. Step 2: Convert to fraction form
    13,387.24/18,474.89 = 8,081.03/x
  3. Step 3: Cross multiply
    13,387.24x = 18,474.89 × 8,081.03
  4. Step 4: Simplify right side
    13,387.24x = 149,296,146.12
  5. Step 5: Solve for x
    x = 149,296,146.12/13,387.24
  6. Step 6: Final answer
    x = 11,152.12

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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.