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Finding the Third Proportional to 15,429,375 and 21,015,531

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Solution

The third proportional to 15,429,375 and 21,015,531 is: 28,624,136.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,429,375 : 21,015,531 = 21,015,531 : x
  2. Step 2: Convert to fraction form
    15,429,375/21,015,531 = 21,015,531/x
  3. Step 3: Cross multiply
    15,429,375x = 21,015,531 × 21,015,531
  4. Step 4: Simplify right side
    15,429,375x = 441,652,543,211,961
  5. Step 5: Solve for x
    x = 441,652,543,211,961/15,429,375
  6. Step 6: Final answer
    x = 28,624,136.96

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.