Home / 11,620.62-17,421.21-5,385.10

Finding the Fourth Proportional to 11,620.62, 17,421.21 and 5,385.10

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Solution

The fourth proportional to 11,620.62, 17,421.21 and 5,385.10 is: 8,073.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,620.62 : 17,421.21 = 5,385.10 : x
  2. Step 2: Convert to fraction form
    11,620.62/17,421.21 = 5,385.10/x
  3. Step 3: Cross multiply
    11,620.62x = 17,421.21 × 5,385.10
  4. Step 4: Simplify right side
    11,620.62x = 93,814,969.80
  5. Step 5: Solve for x
    x = 93,814,969.80/11,620.62
  6. Step 6: Final answer
    x = 8,073.15

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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.