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Finding the Third Proportional to 12,555.63 and 18,423.38

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Solution

The third proportional to 12,555.63 and 18,423.38 is: 27,033.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,555.63 : 18,423.38 = 18,423.38 : x
  2. Step 2: Convert to fraction form
    12,555.63/18,423.38 = 18,423.38/x
  3. Step 3: Cross multiply
    12,555.63x = 18,423.38 × 18,423.38
  4. Step 4: Simplify right side
    12,555.63x = 339,420,746.39
  5. Step 5: Solve for x
    x = 339,420,746.39/12,555.63
  6. Step 6: Final answer
    x = 27,033.36

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.