Home / 20,804.18-31,179.08-18,165.02

Finding the Fourth Proportional to 20,804.18, 31,179.08 and 18,165.02

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Solution

The fourth proportional to 20,804.18, 31,179.08 and 18,165.02 is: 27,223.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,804.18 : 31,179.08 = 18,165.02 : x
  2. Step 2: Convert to fraction form
    20,804.18/31,179.08 = 18,165.02/x
  3. Step 3: Cross multiply
    20,804.18x = 31,179.08 × 18,165.02
  4. Step 4: Simplify right side
    20,804.18x = 566,368,611.78
  5. Step 5: Solve for x
    x = 566,368,611.78/20,804.18
  6. Step 6: Final answer
    x = 27,223.79

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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.