Home / 13,508.55-18,651.68-8,731.32

Finding the Fourth Proportional to 13,508.55, 18,651.68 and 8,731.32

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Solution

The fourth proportional to 13,508.55, 18,651.68 and 8,731.32 is: 12,055.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,508.55 : 18,651.68 = 8,731.32 : x
  2. Step 2: Convert to fraction form
    13,508.55/18,651.68 = 8,731.32/x
  3. Step 3: Cross multiply
    13,508.55x = 18,651.68 × 8,731.32
  4. Step 4: Simplify right side
    13,508.55x = 162,853,786.62
  5. Step 5: Solve for x
    x = 162,853,786.62/13,508.55
  6. Step 6: Final answer
    x = 12,055.61

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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.