Home / 20,774.49-31,170.87-10,911.48

Finding the Fourth Proportional to 20,774.49, 31,170.87 and 10,911.48

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Solution

The fourth proportional to 20,774.49, 31,170.87 and 10,911.48 is: 16,372.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,774.49 : 31,170.87 = 10,911.48 : x
  2. Step 2: Convert to fraction form
    20,774.49/31,170.87 = 10,911.48/x
  3. Step 3: Cross multiply
    20,774.49x = 31,170.87 × 10,911.48
  4. Step 4: Simplify right side
    20,774.49x = 340,120,324.59
  5. Step 5: Solve for x
    x = 340,120,324.59/20,774.49
  6. Step 6: Final answer
    x = 16,372.02

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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.