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Finding the Third Proportional to 21,692,639 and 28,789,347

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Solution

The third proportional to 21,692,639 and 28,789,347 is: 38,207,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,692,639 : 28,789,347 = 28,789,347 : x
  2. Step 2: Convert to fraction form
    21,692,639/28,789,347 = 28,789,347/x
  3. Step 3: Cross multiply
    21,692,639x = 28,789,347 × 28,789,347
  4. Step 4: Simplify right side
    21,692,639x = 828,826,500,686,409
  5. Step 5: Solve for x
    x = 828,826,500,686,409/21,692,639
  6. Step 6: Final answer
    x = 38,207,730.31

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.