Home / 11,146.25-16,720.77-4,125.08

Finding the Fourth Proportional to 11,146.25, 16,720.77 and 4,125.08

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Solution

The fourth proportional to 11,146.25, 16,720.77 and 4,125.08 is: 6,188.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,146.25 : 16,720.77 = 4,125.08 : x
  2. Step 2: Convert to fraction form
    11,146.25/16,720.77 = 4,125.08/x
  3. Step 3: Cross multiply
    11,146.25x = 16,720.77 × 4,125.08
  4. Step 4: Simplify right side
    11,146.25x = 68,974,513.91
  5. Step 5: Solve for x
    x = 68,974,513.91/11,146.25
  6. Step 6: Final answer
    x = 6,188.14

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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.