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Finding the Third Proportional to 14,623.50 and 21,389

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Solution

The third proportional to 14,623.50 and 21,389 is: 31,284.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,623.50 : 21,389 = 21,389 : x
  2. Step 2: Convert to fraction form
    14,623.50/21,389 = 21,389/x
  3. Step 3: Cross multiply
    14,623.50x = 21,389 × 21,389
  4. Step 4: Simplify right side
    14,623.50x = 457,489,321
  5. Step 5: Solve for x
    x = 457,489,321/14,623.50
  6. Step 6: Final answer
    x = 31,284.53

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.