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Finding the Third Proportional to 18,008 and 28,490

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Solution

The third proportional to 18,008 and 28,490 is: 45,073.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,008 : 28,490 = 28,490 : x
  2. Step 2: Convert to fraction form
    18,008/28,490 = 28,490/x
  3. Step 3: Cross multiply
    18,008x = 28,490 × 28,490
  4. Step 4: Simplify right side
    18,008x = 811,680,100
  5. Step 5: Solve for x
    x = 811,680,100/18,008
  6. Step 6: Final answer
    x = 45,073.31

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Why These Related Problems?

These problems maintain the same ratio (1.58) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.