Home / 13,810.11-20,700.27-6,781.95

Finding the Fourth Proportional to 13,810.11, 20,700.27 and 6,781.95

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Solution

The fourth proportional to 13,810.11, 20,700.27 and 6,781.95 is: 10,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,810.11 : 20,700.27 = 6,781.95 : x
  2. Step 2: Convert to fraction form
    13,810.11/20,700.27 = 6,781.95/x
  3. Step 3: Cross multiply
    13,810.11x = 20,700.27 × 6,781.95
  4. Step 4: Simplify right side
    13,810.11x = 140,388,196.13
  5. Step 5: Solve for x
    x = 140,388,196.13/13,810.11
  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.