Home / 20,743.78-31,112.76-5,953.96

Finding the Fourth Proportional to 20,743.78, 31,112.76 and 5,953.96

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Solution

The fourth proportional to 20,743.78, 31,112.76 and 5,953.96 is: 8,930.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,743.78 : 31,112.76 = 5,953.96 : x
  2. Step 2: Convert to fraction form
    20,743.78/31,112.76 = 5,953.96/x
  3. Step 3: Cross multiply
    20,743.78x = 31,112.76 × 5,953.96
  4. Step 4: Simplify right side
    20,743.78x = 185,244,128.53
  5. Step 5: Solve for x
    x = 185,244,128.53/20,743.78
  6. Step 6: Final answer
    x = 8,930.10

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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.