Home / 20,727.72-28,607.56-11,778.03

Finding the Fourth Proportional to 20,727.72, 28,607.56 and 11,778.03

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Solution

The fourth proportional to 20,727.72, 28,607.56 and 11,778.03 is: 16,255.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,727.72 : 28,607.56 = 11,778.03 : x
  2. Step 2: Convert to fraction form
    20,727.72/28,607.56 = 11,778.03/x
  3. Step 3: Cross multiply
    20,727.72x = 28,607.56 × 11,778.03
  4. Step 4: Simplify right side
    20,727.72x = 336,940,670.46
  5. Step 5: Solve for x
    x = 336,940,670.46/20,727.72
  6. Step 6: Final answer
    x = 16,255.56

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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.