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Finding the Third Proportional to 10,813,478 and 15,117,969

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Solution

The third proportional to 10,813,478 and 15,117,969 is: 21,135,936.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,813,478 : 15,117,969 = 15,117,969 : x
  2. Step 2: Convert to fraction form
    10,813,478/15,117,969 = 15,117,969/x
  3. Step 3: Cross multiply
    10,813,478x = 15,117,969 × 15,117,969
  4. Step 4: Simplify right side
    10,813,478x = 228,552,986,684,961
  5. Step 5: Solve for x
    x = 228,552,986,684,961/10,813,478
  6. Step 6: Final answer
    x = 21,135,936.72

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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.