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Finding the Fourth Proportional to 26,145.89, 39,219.23 and 8,379.89

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Solution

The fourth proportional to 26,145.89, 39,219.23 and 8,379.89 is: 12,569.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,145.89 : 39,219.23 = 8,379.89 : x
  2. Step 2: Convert to fraction form
    26,145.89/39,219.23 = 8,379.89/x
  3. Step 3: Cross multiply
    26,145.89x = 39,219.23 × 8,379.89
  4. Step 4: Simplify right side
    26,145.89x = 328,652,658.14
  5. Step 5: Solve for x
    x = 328,652,658.14/26,145.89
  6. Step 6: Final answer
    x = 12,569.96

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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.