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Finding the Fourth Proportional to 18,305.40, 27,447.69 and 7,206.08

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Solution

The fourth proportional to 18,305.40, 27,447.69 and 7,206.08 is: 10,805.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,305.40 : 27,447.69 = 7,206.08 : x
  2. Step 2: Convert to fraction form
    18,305.40/27,447.69 = 7,206.08/x
  3. Step 3: Cross multiply
    18,305.40x = 27,447.69 × 7,206.08
  4. Step 4: Simplify right side
    18,305.40x = 197,790,112.72
  5. Step 5: Solve for x
    x = 197,790,112.72/18,305.40
  6. Step 6: Final answer
    x = 10,805.01

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1.5x scale

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.