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Finding the Third Proportional to 21,572 and 29,046

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Solution

The third proportional to 21,572 and 29,046 is: 39,109.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,572 : 29,046 = 29,046 : x
  2. Step 2: Convert to fraction form
    21,572/29,046 = 29,046/x
  3. Step 3: Cross multiply
    21,572x = 29,046 × 29,046
  4. Step 4: Simplify right side
    21,572x = 843,670,116
  5. Step 5: Solve for x
    x = 843,670,116/21,572
  6. Step 6: Final answer
    x = 39,109.50

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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.