Home / 20,681.69-31,025.96-8,201.78

Finding the Fourth Proportional to 20,681.69, 31,025.96 and 8,201.78

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Solution

The fourth proportional to 20,681.69, 31,025.96 and 8,201.78 is: 12,304.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,681.69 : 31,025.96 = 8,201.78 : x
  2. Step 2: Convert to fraction form
    20,681.69/31,025.96 = 8,201.78/x
  3. Step 3: Cross multiply
    20,681.69x = 31,025.96 × 8,201.78
  4. Step 4: Simplify right side
    20,681.69x = 254,468,107.60
  5. Step 5: Solve for x
    x = 254,468,107.60/20,681.69
  6. Step 6: Final answer
    x = 12,304.03

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1.5x scale

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.