Home / 20,553.68-28,364.06-11,122.25

Finding the Fourth Proportional to 20,553.68, 28,364.06 and 11,122.25

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Solution

The fourth proportional to 20,553.68, 28,364.06 and 11,122.25 is: 15,348.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.68 : 28,364.06 = 11,122.25 : x
  2. Step 2: Convert to fraction form
    20,553.68/28,364.06 = 11,122.25/x
  3. Step 3: Cross multiply
    20,553.68x = 28,364.06 × 11,122.25
  4. Step 4: Simplify right side
    20,553.68x = 315,472,052.32
  5. Step 5: Solve for x
    x = 315,472,052.32/20,553.68
  6. Step 6: Final answer
    x = 15,348.69

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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.