Home / 13,694.08-20,543.68-5,486.72

Finding the Fourth Proportional to 13,694.08, 20,543.68 and 5,486.72

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Solution

The fourth proportional to 13,694.08, 20,543.68 and 5,486.72 is: 8,231.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,694.08 : 20,543.68 = 5,486.72 : x
  2. Step 2: Convert to fraction form
    13,694.08/20,543.68 = 5,486.72/x
  3. Step 3: Cross multiply
    13,694.08x = 20,543.68 × 5,486.72
  4. Step 4: Simplify right side
    13,694.08x = 112,717,419.93
  5. Step 5: Solve for x
    x = 112,717,419.93/13,694.08
  6. Step 6: Final answer
    x = 8,231.11

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.