Home / 19,210.86-28,825.19-8,120.13

Finding the Fourth Proportional to 19,210.86, 28,825.19 and 8,120.13

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Solution

The fourth proportional to 19,210.86, 28,825.19 and 8,120.13 is: 12,183.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,210.86 : 28,825.19 = 8,120.13 : x
  2. Step 2: Convert to fraction form
    19,210.86/28,825.19 = 8,120.13/x
  3. Step 3: Cross multiply
    19,210.86x = 28,825.19 × 8,120.13
  4. Step 4: Simplify right side
    19,210.86x = 234,064,249.47
  5. Step 5: Solve for x
    x = 234,064,249.47/19,210.86
  6. Step 6: Final answer
    x = 12,183.95

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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.