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Finding the Fourth Proportional to 18,299.22, 27,429.06 and 8,918.55

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Solution

The fourth proportional to 18,299.22, 27,429.06 and 8,918.55 is: 13,368.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,299.22 : 27,429.06 = 8,918.55 : x
  2. Step 2: Convert to fraction form
    18,299.22/27,429.06 = 8,918.55/x
  3. Step 3: Cross multiply
    18,299.22x = 27,429.06 × 8,918.55
  4. Step 4: Simplify right side
    18,299.22x = 244,627,443.06
  5. Step 5: Solve for x
    x = 244,627,443.06/18,299.22
  6. Step 6: Final answer
    x = 13,368.19

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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.