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Finding the Fourth Proportional to 26,918.19, 40,372.59 and 8,193.69

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Solution

The fourth proportional to 26,918.19, 40,372.59 and 8,193.69 is: 12,289.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,918.19 : 40,372.59 = 8,193.69 : x
  2. Step 2: Convert to fraction form
    26,918.19/40,372.59 = 8,193.69/x
  3. Step 3: Cross multiply
    26,918.19x = 40,372.59 × 8,193.69
  4. Step 4: Simplify right side
    26,918.19x = 330,800,486.96
  5. Step 5: Solve for x
    x = 330,800,486.96/26,918.19
  6. Step 6: Final answer
    x = 12,289.11

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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.