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Finding the Fourth Proportional to 18,426.26, 27,624.90 and 8,564.20

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Solution

The fourth proportional to 18,426.26, 27,624.90 and 8,564.20 is: 12,839.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,426.26 : 27,624.90 = 8,564.20 : x
  2. Step 2: Convert to fraction form
    18,426.26/27,624.90 = 8,564.20/x
  3. Step 3: Cross multiply
    18,426.26x = 27,624.90 × 8,564.20
  4. Step 4: Simplify right side
    18,426.26x = 236,585,168.58
  5. Step 5: Solve for x
    x = 236,585,168.58/18,426.26
  6. Step 6: Final answer
    x = 12,839.57

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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.