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Finding the Fourth Proportional to 17,563.40, 26,308.30 and 8,211.40

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Solution

The fourth proportional to 17,563.40, 26,308.30 and 8,211.40 is: 12,299.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,563.40 : 26,308.30 = 8,211.40 : x
  2. Step 2: Convert to fraction form
    17,563.40/26,308.30 = 8,211.40/x
  3. Step 3: Cross multiply
    17,563.40x = 26,308.30 × 8,211.40
  4. Step 4: Simplify right side
    17,563.40x = 216,027,974.62
  5. Step 5: Solve for x
    x = 216,027,974.62/17,563.40
  6. Step 6: Final answer
    x = 12,299.89

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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.