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Finding the Fourth Proportional to 14,969.81, 20,661.08 and 8,682.19

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Solution

The fourth proportional to 14,969.81, 20,661.08 and 8,682.19 is: 11,983.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,969.81 : 20,661.08 = 8,682.19 : x
  2. Step 2: Convert to fraction form
    14,969.81/20,661.08 = 8,682.19/x
  3. Step 3: Cross multiply
    14,969.81x = 20,661.08 × 8,682.19
  4. Step 4: Simplify right side
    14,969.81x = 179,383,327.10
  5. Step 5: Solve for x
    x = 179,383,327.10/14,969.81
  6. Step 6: Final answer
    x = 11,983.00

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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.