Home / 13,810.12-20,700.26-6,781.96

Finding the Fourth Proportional to 13,810.12, 20,700.26 and 6,781.96

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Solution

The fourth proportional to 13,810.12, 20,700.26 and 6,781.96 is: 10,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.12 : 20,700.26 = 6,781.96 : x
  2. Step 2: Convert to fraction form
    13,810.12/20,700.26 = 6,781.96/x
  3. Step 3: Cross multiply
    13,810.12x = 20,700.26 × 6,781.96
  4. Step 4: Simplify right side
    13,810.12x = 140,388,335.31
  5. Step 5: Solve for x
    x = 140,388,335.31/13,810.12
  6. Step 6: Final answer
    x = 10,165.61

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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.