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Finding the Third Proportional to 10,215 and 14,455.13

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Solution

The third proportional to 10,215 and 14,455.13 is: 20,455.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,215 : 14,455.13 = 14,455.13 : x
  2. Step 2: Convert to fraction form
    10,215/14,455.13 = 14,455.13/x
  3. Step 3: Cross multiply
    10,215x = 14,455.13 × 14,455.13
  4. Step 4: Simplify right side
    10,215x = 208,950,638.77
  5. Step 5: Solve for x
    x = 208,950,638.77/10,215
  6. Step 6: Final answer
    x = 20,455.28

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.