Home / 11,129.35-16,694.02-2,809.86

Finding the Fourth Proportional to 11,129.35, 16,694.02 and 2,809.86

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Solution

The fourth proportional to 11,129.35, 16,694.02 and 2,809.86 is: 4,214.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,129.35 : 16,694.02 = 2,809.86 : x
  2. Step 2: Convert to fraction form
    11,129.35/16,694.02 = 2,809.86/x
  3. Step 3: Cross multiply
    11,129.35x = 16,694.02 × 2,809.86
  4. Step 4: Simplify right side
    11,129.35x = 46,907,948.71
  5. Step 5: Solve for x
    x = 46,907,948.71/11,129.35
  6. Step 6: Final answer
    x = 4,214.80

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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.