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Finding the Third Proportional to 8,972 and 13,776

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Solution

The third proportional to 8,972 and 13,776 is: 21,152.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,972 : 13,776 = 13,776 : x
  2. Step 2: Convert to fraction form
    8,972/13,776 = 13,776/x
  3. Step 3: Cross multiply
    8,972x = 13,776 × 13,776
  4. Step 4: Simplify right side
    8,972x = 189,778,176
  5. Step 5: Solve for x
    x = 189,778,176/8,972
  6. Step 6: Final answer
    x = 21,152.27

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.