Home / 12,694.20-19,003.50-9,421.80

Finding the Fourth Proportional to 12,694.20, 19,003.50 and 9,421.80

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Solution

The fourth proportional to 12,694.20, 19,003.50 and 9,421.80 is: 14,104.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,694.20 : 19,003.50 = 9,421.80 : x
  2. Step 2: Convert to fraction form
    12,694.20/19,003.50 = 9,421.80/x
  3. Step 3: Cross multiply
    12,694.20x = 19,003.50 × 9,421.80
  4. Step 4: Simplify right side
    12,694.20x = 179,047,176.30
  5. Step 5: Solve for x
    x = 179,047,176.30/12,694.20
  6. Step 6: Final answer
    x = 14,104.64

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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.