Home / 12,416.24-18,613.87-5,390.96

Finding the Fourth Proportional to 12,416.24, 18,613.87 and 5,390.96

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Solution

The fourth proportional to 12,416.24, 18,613.87 and 5,390.96 is: 8,081.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,416.24 : 18,613.87 = 5,390.96 : x
  2. Step 2: Convert to fraction form
    12,416.24/18,613.87 = 5,390.96/x
  3. Step 3: Cross multiply
    12,416.24x = 18,613.87 × 5,390.96
  4. Step 4: Simplify right side
    12,416.24x = 100,346,522.07
  5. Step 5: Solve for x
    x = 100,346,522.07/12,416.24
  6. Step 6: Final answer
    x = 8,081.88

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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.