Home / 20,769.93-31,167.90-8,288.10

Finding the Fourth Proportional to 20,769.93, 31,167.90 and 8,288.10

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Solution

The fourth proportional to 20,769.93, 31,167.90 and 8,288.10 is: 12,437.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,769.93 : 31,167.90 = 8,288.10 : x
  2. Step 2: Convert to fraction form
    20,769.93/31,167.90 = 8,288.10/x
  3. Step 3: Cross multiply
    20,769.93x = 31,167.90 × 8,288.10
  4. Step 4: Simplify right side
    20,769.93x = 258,322,671.99
  5. Step 5: Solve for x
    x = 258,322,671.99/20,769.93
  6. Step 6: Final answer
    x = 12,437.34

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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.