Home / 14,121.86-21,149.38-12,262.87

Finding the Fourth Proportional to 14,121.86, 21,149.38 and 12,262.87

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Solution

The fourth proportional to 14,121.86, 21,149.38 and 12,262.87 is: 18,365.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,121.86 : 21,149.38 = 12,262.87 : x
  2. Step 2: Convert to fraction form
    14,121.86/21,149.38 = 12,262.87/x
  3. Step 3: Cross multiply
    14,121.86x = 21,149.38 × 12,262.87
  4. Step 4: Simplify right side
    14,121.86x = 259,352,066.86
  5. Step 5: Solve for x
    x = 259,352,066.86/14,121.86
  6. Step 6: Final answer
    x = 18,365.30

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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.