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Finding the Third Proportional to 12,912 and 19,768

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Solution

The third proportional to 12,912 and 19,768 is: 30,264.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,912 : 19,768 = 19,768 : x
  2. Step 2: Convert to fraction form
    12,912/19,768 = 19,768/x
  3. Step 3: Cross multiply
    12,912x = 19,768 × 19,768
  4. Step 4: Simplify right side
    12,912x = 390,773,824
  5. Step 5: Solve for x
    x = 390,773,824/12,912
  6. Step 6: Final answer
    x = 30,264.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.