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Finding the Fourth Proportional to 17,966.90, 26,964.48 and 12,459

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Solution

The fourth proportional to 17,966.90, 26,964.48 and 12,459 is: 18,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,966.90 : 26,964.48 = 12,459 : x
  2. Step 2: Convert to fraction form
    17,966.90/26,964.48 = 12,459/x
  3. Step 3: Cross multiply
    17,966.90x = 26,964.48 × 12,459
  4. Step 4: Simplify right side
    17,966.90x = 335,950,456.32
  5. Step 5: Solve for x
    x = 335,950,456.32/17,966.90
  6. Step 6: Final answer
    x = 18,698.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.