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Finding the Third Proportional to 12,988 and 15,796

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Solution

The third proportional to 12,988 and 15,796 is: 19,211.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988 : 15,796 = 15,796 : x
  2. Step 2: Convert to fraction form
    12,988/15,796 = 15,796/x
  3. Step 3: Cross multiply
    12,988x = 15,796 × 15,796
  4. Step 4: Simplify right side
    12,988x = 249,513,616
  5. Step 5: Solve for x
    x = 249,513,616/12,988
  6. Step 6: Final answer
    x = 19,211.09

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Why These Related Problems?

These problems maintain the same ratio (1.22) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.