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Finding the Fourth Proportional to 19,617.66, 27,066.14 and 12,169.98

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Solution

The fourth proportional to 19,617.66, 27,066.14 and 12,169.98 is: 16,790.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,617.66 : 27,066.14 = 12,169.98 : x
  2. Step 2: Convert to fraction form
    19,617.66/27,066.14 = 12,169.98/x
  3. Step 3: Cross multiply
    19,617.66x = 27,066.14 × 12,169.98
  4. Step 4: Simplify right side
    19,617.66x = 329,394,382.48
  5. Step 5: Solve for x
    x = 329,394,382.48/19,617.66
  6. Step 6: Final answer
    x = 16,790.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.