Home / 20,703.92-28,571.52-11,272.55

Finding the Fourth Proportional to 20,703.92, 28,571.52 and 11,272.55

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Solution

The fourth proportional to 20,703.92, 28,571.52 and 11,272.55 is: 15,556.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,703.92 : 28,571.52 = 11,272.55 : x
  2. Step 2: Convert to fraction form
    20,703.92/28,571.52 = 11,272.55/x
  3. Step 3: Cross multiply
    20,703.92x = 28,571.52 × 11,272.55
  4. Step 4: Simplify right side
    20,703.92x = 322,073,887.78
  5. Step 5: Solve for x
    x = 322,073,887.78/20,703.92
  6. Step 6: Final answer
    x = 15,556.18

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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.