Home / 20,741.32-28,622.82-11,309.32

Finding the Fourth Proportional to 20,741.32, 28,622.82 and 11,309.32

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Solution

The fourth proportional to 20,741.32, 28,622.82 and 11,309.32 is: 15,606.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,741.32 : 28,622.82 = 11,309.32 : x
  2. Step 2: Convert to fraction form
    20,741.32/28,622.82 = 11,309.32/x
  3. Step 3: Cross multiply
    20,741.32x = 28,622.82 × 11,309.32
  4. Step 4: Simplify right side
    20,741.32x = 323,704,630.68
  5. Step 5: Solve for x
    x = 323,704,630.68/20,741.32
  6. Step 6: Final answer
    x = 15,606.75

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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.