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Finding the Third Proportional to 12,997,726 and 18,170,688

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Solution

The third proportional to 12,997,726 and 18,170,688 is: 25,402,435.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,997,726 : 18,170,688 = 18,170,688 : x
  2. Step 2: Convert to fraction form
    12,997,726/18,170,688 = 18,170,688/x
  3. Step 3: Cross multiply
    12,997,726x = 18,170,688 × 18,170,688
  4. Step 4: Simplify right side
    12,997,726x = 330,173,902,393,344
  5. Step 5: Solve for x
    x = 330,173,902,393,344/12,997,726
  6. Step 6: Final answer
    x = 25,402,435.96

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.