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Finding the Third Proportional to 6,988.50 and 15,129

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Solution

The third proportional to 6,988.50 and 15,129 is: 32,751.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.50 : 15,129 = 15,129 : x
  2. Step 2: Convert to fraction form
    6,988.50/15,129 = 15,129/x
  3. Step 3: Cross multiply
    6,988.50x = 15,129 × 15,129
  4. Step 4: Simplify right side
    6,988.50x = 228,886,641
  5. Step 5: Solve for x
    x = 228,886,641/6,988.50
  6. Step 6: Final answer
    x = 32,751.90

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.