Home / 20,806.18-31,182.08-18,167.02

Finding the Fourth Proportional to 20,806.18, 31,182.08 and 18,167.02

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Solution

The fourth proportional to 20,806.18, 31,182.08 and 18,167.02 is: 27,226.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,806.18 : 31,182.08 = 18,167.02 : x
  2. Step 2: Convert to fraction form
    20,806.18/31,182.08 = 18,167.02/x
  3. Step 3: Cross multiply
    20,806.18x = 31,182.08 × 18,167.02
  4. Step 4: Simplify right side
    20,806.18x = 566,485,471.00
  5. Step 5: Solve for x
    x = 566,485,471.00/20,806.18
  6. Step 6: Final answer
    x = 27,226.79

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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.