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Finding the Third Proportional to 8,461.13 and 12,779.44

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Solution

The third proportional to 8,461.13 and 12,779.44 is: 19,301.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,461.13 : 12,779.44 = 12,779.44 : x
  2. Step 2: Convert to fraction form
    8,461.13/12,779.44 = 12,779.44/x
  3. Step 3: Cross multiply
    8,461.13x = 12,779.44 × 12,779.44
  4. Step 4: Simplify right side
    8,461.13x = 163,314,022.82
  5. Step 5: Solve for x
    x = 163,314,022.82/8,461.13
  6. Step 6: Final answer
    x = 19,301.69

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.