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Finding the Fourth Proportional to 26,404.20, 39,604.86 and 8,872.20

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Solution

The fourth proportional to 26,404.20, 39,604.86 and 8,872.20 is: 13,307.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,404.20 : 39,604.86 = 8,872.20 : x
  2. Step 2: Convert to fraction form
    26,404.20/39,604.86 = 8,872.20/x
  3. Step 3: Cross multiply
    26,404.20x = 39,604.86 × 8,872.20
  4. Step 4: Simplify right side
    26,404.20x = 351,382,238.89
  5. Step 5: Solve for x
    x = 351,382,238.89/26,404.20
  6. Step 6: Final answer
    x = 13,307.82

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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.