Home / 20,741.78-31,109.76-5,951.96

Finding the Fourth Proportional to 20,741.78, 31,109.76 and 5,951.96

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Solution

The fourth proportional to 20,741.78, 31,109.76 and 5,951.96 is: 8,927.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.78 : 31,109.76 = 5,951.96 : x
  2. Step 2: Convert to fraction form
    20,741.78/31,109.76 = 5,951.96/x
  3. Step 3: Cross multiply
    20,741.78x = 31,109.76 × 5,951.96
  4. Step 4: Simplify right side
    20,741.78x = 185,164,047.13
  5. Step 5: Solve for x
    x = 185,164,047.13/20,741.78
  6. Step 6: Final answer
    x = 8,927.10

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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.