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Finding the Third Proportional to 8,818 and 21,316

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Solution

The third proportional to 8,818 and 21,316 is: 51,527.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,818 : 21,316 = 21,316 : x
  2. Step 2: Convert to fraction form
    8,818/21,316 = 21,316/x
  3. Step 3: Cross multiply
    8,818x = 21,316 × 21,316
  4. Step 4: Simplify right side
    8,818x = 454,371,856
  5. Step 5: Solve for x
    x = 454,371,856/8,818
  6. Step 6: Final answer
    x = 51,527.77

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.