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Finding the Third Proportional to 15,724 and 22,354

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Solution

The third proportional to 15,724 and 22,354 is: 31,779.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,724 : 22,354 = 22,354 : x
  2. Step 2: Convert to fraction form
    15,724/22,354 = 22,354/x
  3. Step 3: Cross multiply
    15,724x = 22,354 × 22,354
  4. Step 4: Simplify right side
    15,724x = 499,701,316
  5. Step 5: Solve for x
    x = 499,701,316/15,724
  6. Step 6: Final answer
    x = 31,779.53

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.