Home / 20,563.41-28,377.60-11,131.97

Finding the Fourth Proportional to 20,563.41, 28,377.60 and 11,131.97

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Solution

The fourth proportional to 20,563.41, 28,377.60 and 11,131.97 is: 15,362.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.41 : 28,377.60 = 11,131.97 : x
  2. Step 2: Convert to fraction form
    20,563.41/28,377.60 = 11,131.97/x
  3. Step 3: Cross multiply
    20,563.41x = 28,377.60 × 11,131.97
  4. Step 4: Simplify right side
    20,563.41x = 315,898,663.33
  5. Step 5: Solve for x
    x = 315,898,663.33/20,563.41
  6. Step 6: Final answer
    x = 15,362.17

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.