Home / 20,553.74-28,364.24-11,122.30

Finding the Fourth Proportional to 20,553.74, 28,364.24 and 11,122.30

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Solution

The fourth proportional to 20,553.74, 28,364.24 and 11,122.30 is: 15,348.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.74 : 28,364.24 = 11,122.30 : x
  2. Step 2: Convert to fraction form
    20,553.74/28,364.24 = 11,122.30/x
  3. Step 3: Cross multiply
    20,553.74x = 28,364.24 × 11,122.30
  4. Step 4: Simplify right side
    20,553.74x = 315,475,530.94
  5. Step 5: Solve for x
    x = 315,475,530.94/20,553.74
  6. Step 6: Final answer
    x = 15,348.81

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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.