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Finding the Third Proportional to 15,720 and 29,648

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Solution

The third proportional to 15,720 and 29,648 is: 55,916.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,720 : 29,648 = 29,648 : x
  2. Step 2: Convert to fraction form
    15,720/29,648 = 29,648/x
  3. Step 3: Cross multiply
    15,720x = 29,648 × 29,648
  4. Step 4: Simplify right side
    15,720x = 879,003,904
  5. Step 5: Solve for x
    x = 879,003,904/15,720
  6. Step 6: Final answer
    x = 55,916.28

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Why These Related Problems?

These problems maintain the same ratio (1.89) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.