Home / 20,743.24-31,115.02-8,266.44

Finding the Fourth Proportional to 20,743.24, 31,115.02 and 8,266.44

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Solution

The fourth proportional to 20,743.24, 31,115.02 and 8,266.44 is: 12,399.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.24 : 31,115.02 = 8,266.44 : x
  2. Step 2: Convert to fraction form
    20,743.24/31,115.02 = 8,266.44/x
  3. Step 3: Cross multiply
    20,743.24x = 31,115.02 × 8,266.44
  4. Step 4: Simplify right side
    20,743.24x = 257,210,290.35
  5. Step 5: Solve for x
    x = 257,210,290.35/20,743.24
  6. Step 6: Final answer
    x = 12,399.72

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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.