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Finding the Third Proportional to 13,315 and 28,979

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Solution

The third proportional to 13,315 and 28,979 is: 63,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,315 : 28,979 = 28,979 : x
  2. Step 2: Convert to fraction form
    13,315/28,979 = 28,979/x
  3. Step 3: Cross multiply
    13,315x = 28,979 × 28,979
  4. Step 4: Simplify right side
    13,315x = 839,782,441
  5. Step 5: Solve for x
    x = 839,782,441/13,315
  6. Step 6: Final answer
    x = 63,070.40

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.