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Finding the Third Proportional to 15,699,261 and 21,204,426

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Solution

The third proportional to 15,699,261 and 21,204,426 is: 28,640,053.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699,261 : 21,204,426 = 21,204,426 : x
  2. Step 2: Convert to fraction form
    15,699,261/21,204,426 = 21,204,426/x
  3. Step 3: Cross multiply
    15,699,261x = 21,204,426 × 21,204,426
  4. Step 4: Simplify right side
    15,699,261x = 449,627,681,989,476
  5. Step 5: Solve for x
    x = 449,627,681,989,476/15,699,261
  6. Step 6: Final answer
    x = 28,640,053.95

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.