Home / 20,530.48-30,768.72-11,174.44

Finding the Fourth Proportional to 20,530.48, 30,768.72 and 11,174.44

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Solution

The fourth proportional to 20,530.48, 30,768.72 and 11,174.44 is: 16,746.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,530.48 : 30,768.72 = 11,174.44 : x
  2. Step 2: Convert to fraction form
    20,530.48/30,768.72 = 11,174.44/x
  3. Step 3: Cross multiply
    20,530.48x = 30,768.72 × 11,174.44
  4. Step 4: Simplify right side
    20,530.48x = 343,823,215.52
  5. Step 5: Solve for x
    x = 343,823,215.52/20,530.48
  6. Step 6: Final answer
    x = 16,746.96

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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.