Home / 18,727.86-28,083.48-9,960.78

Finding the Fourth Proportional to 18,727.86, 28,083.48 and 9,960.78

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Solution

The fourth proportional to 18,727.86, 28,083.48 and 9,960.78 is: 14,936.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,727.86 : 28,083.48 = 9,960.78 : x
  2. Step 2: Convert to fraction form
    18,727.86/28,083.48 = 9,960.78/x
  3. Step 3: Cross multiply
    18,727.86x = 28,083.48 × 9,960.78
  4. Step 4: Simplify right side
    18,727.86x = 279,733,365.91
  5. Step 5: Solve for x
    x = 279,733,365.91/18,727.86
  6. Step 6: Final answer
    x = 14,936.75

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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.