Home / 20,553.75-28,364.38-11,122.52

Finding the Fourth Proportional to 20,553.75, 28,364.38 and 11,122.52

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Solution

The fourth proportional to 20,553.75, 28,364.38 and 11,122.52 is: 15,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,553.75 : 28,364.38 = 11,122.52 : x
  2. Step 2: Convert to fraction form
    20,553.75/28,364.38 = 11,122.52/x
  3. Step 3: Cross multiply
    20,553.75x = 28,364.38 × 11,122.52
  4. Step 4: Simplify right side
    20,553.75x = 315,483,214.21
  5. Step 5: Solve for x
    x = 315,483,214.21/20,553.75
  6. Step 6: Final answer
    x = 15,349.18

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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.