Home / 20,721.72-31,087.44-5,930.22

Finding the Fourth Proportional to 20,721.72, 31,087.44 and 5,930.22

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Solution

The fourth proportional to 20,721.72, 31,087.44 and 5,930.22 is: 8,896.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,721.72 : 31,087.44 = 5,930.22 : x
  2. Step 2: Convert to fraction form
    20,721.72/31,087.44 = 5,930.22/x
  3. Step 3: Cross multiply
    20,721.72x = 31,087.44 × 5,930.22
  4. Step 4: Simplify right side
    20,721.72x = 184,355,358.44
  5. Step 5: Solve for x
    x = 184,355,358.44/20,721.72
  6. Step 6: Final answer
    x = 8,896.72

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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.