Home / 20,731.24-31,096.58-13,742.52

Finding the Fourth Proportional to 20,731.24, 31,096.58 and 13,742.52

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Solution

The fourth proportional to 20,731.24, 31,096.58 and 13,742.52 is: 20,613.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.24 : 31,096.58 = 13,742.52 : x
  2. Step 2: Convert to fraction form
    20,731.24/31,096.58 = 13,742.52/x
  3. Step 3: Cross multiply
    20,731.24x = 31,096.58 × 13,742.52
  4. Step 4: Simplify right side
    20,731.24x = 427,345,372.58
  5. Step 5: Solve for x
    x = 427,345,372.58/20,731.24
  6. Step 6: Final answer
    x = 20,613.59

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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.