Home / 20,736.48-28,616.64-11,305.52

Finding the Fourth Proportional to 20,736.48, 28,616.64 and 11,305.52

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Solution

The fourth proportional to 20,736.48, 28,616.64 and 11,305.52 is: 15,601.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.48 : 28,616.64 = 11,305.52 : x
  2. Step 2: Convert to fraction form
    20,736.48/28,616.64 = 11,305.52/x
  3. Step 3: Cross multiply
    20,736.48x = 28,616.64 × 11,305.52
  4. Step 4: Simplify right side
    20,736.48x = 323,525,995.85
  5. Step 5: Solve for x
    x = 323,525,995.85/20,736.48
  6. Step 6: Final answer
    x = 15,601.78

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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.