Home / 13,845.72-20,768.32-5,080.56

Finding the Fourth Proportional to 13,845.72, 20,768.32 and 5,080.56

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Solution

The fourth proportional to 13,845.72, 20,768.32 and 5,080.56 is: 7,620.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,845.72 : 20,768.32 = 5,080.56 : x
  2. Step 2: Convert to fraction form
    13,845.72/20,768.32 = 5,080.56/x
  3. Step 3: Cross multiply
    13,845.72x = 20,768.32 × 5,080.56
  4. Step 4: Simplify right side
    13,845.72x = 105,514,695.86
  5. Step 5: Solve for x
    x = 105,514,695.86/13,845.72
  6. Step 6: Final answer
    x = 7,620.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.