Home / 14,786.25-20,405.10-8,072.02

Finding the Fourth Proportional to 14,786.25, 20,405.10 and 8,072.02

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Solution

The fourth proportional to 14,786.25, 20,405.10 and 8,072.02 is: 11,139.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,786.25 : 20,405.10 = 8,072.02 : x
  2. Step 2: Convert to fraction form
    14,786.25/20,405.10 = 8,072.02/x
  3. Step 3: Cross multiply
    14,786.25x = 20,405.10 × 8,072.02
  4. Step 4: Simplify right side
    14,786.25x = 164,710,375.30
  5. Step 5: Solve for x
    x = 164,710,375.30/14,786.25
  6. Step 6: Final answer
    x = 11,139.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.