Home / 20,736.96-28,617.60-11,305.68

Finding the Fourth Proportional to 20,736.96, 28,617.60 and 11,305.68

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Solution

The fourth proportional to 20,736.96, 28,617.60 and 11,305.68 is: 15,602.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,736.96 : 28,617.60 = 11,305.68 : x
  2. Step 2: Convert to fraction form
    20,736.96/28,617.60 = 11,305.68/x
  3. Step 3: Cross multiply
    20,736.96x = 28,617.60 × 11,305.68
  4. Step 4: Simplify right side
    20,736.96x = 323,541,427.97
  5. Step 5: Solve for x
    x = 323,541,427.97/20,736.96
  6. Step 6: Final answer
    x = 15,602.16

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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.