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Finding the Third Proportional to 15,671,540 and 21,281,582

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Solution

The third proportional to 15,671,540 and 21,281,582 is: 28,899,886.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,671,540 : 21,281,582 = 21,281,582 : x
  2. Step 2: Convert to fraction form
    15,671,540/21,281,582 = 21,281,582/x
  3. Step 3: Cross multiply
    15,671,540x = 21,281,582 × 21,281,582
  4. Step 4: Simplify right side
    15,671,540x = 452,905,732,422,724
  5. Step 5: Solve for x
    x = 452,905,732,422,724/15,671,540
  6. Step 6: Final answer
    x = 28,899,886.83

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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.