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Finding the Fourth Proportional to 12,616.11, 18,940.91 and 10,779.03

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Solution

The fourth proportional to 12,616.11, 18,940.91 and 10,779.03 is: 16,182.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,616.11 : 18,940.91 = 10,779.03 : x
  2. Step 2: Convert to fraction form
    12,616.11/18,940.91 = 10,779.03/x
  3. Step 3: Cross multiply
    12,616.11x = 18,940.91 × 10,779.03
  4. Step 4: Simplify right side
    12,616.11x = 204,164,583.22
  5. Step 5: Solve for x
    x = 204,164,583.22/12,616.11
  6. Step 6: Final answer
    x = 16,182.85

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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.