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Finding the Fourth Proportional to 13,606.12, 18,776.64 and 8,017.12

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Solution

The fourth proportional to 13,606.12, 18,776.64 and 8,017.12 is: 11,063.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,606.12 : 18,776.64 = 8,017.12 : x
  2. Step 2: Convert to fraction form
    13,606.12/18,776.64 = 8,017.12/x
  3. Step 3: Cross multiply
    13,606.12x = 18,776.64 × 8,017.12
  4. Step 4: Simplify right side
    13,606.12x = 150,534,576.08
  5. Step 5: Solve for x
    x = 150,534,576.08/13,606.12
  6. Step 6: Final answer
    x = 11,063.74

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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.