Home / 26,638.56-39,961.68-8,172

Finding the Fourth Proportional to 26,638.56, 39,961.68 and 8,172

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Solution

The fourth proportional to 26,638.56, 39,961.68 and 8,172 is: 12,259.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,638.56 : 39,961.68 = 8,172 : x
  2. Step 2: Convert to fraction form
    26,638.56/39,961.68 = 8,172/x
  3. Step 3: Cross multiply
    26,638.56x = 39,961.68 × 8,172
  4. Step 4: Simplify right side
    26,638.56x = 326,566,848.96
  5. Step 5: Solve for x
    x = 326,566,848.96/26,638.56
  6. Step 6: Final answer
    x = 12,259.18

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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.