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Finding the Fourth Proportional to 25,936.80, 38,907.90 and 7,216.89

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Solution

The fourth proportional to 25,936.80, 38,907.90 and 7,216.89 is: 10,826.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,936.80 : 38,907.90 = 7,216.89 : x
  2. Step 2: Convert to fraction form
    25,936.80/38,907.90 = 7,216.89/x
  3. Step 3: Cross multiply
    25,936.80x = 38,907.90 × 7,216.89
  4. Step 4: Simplify right side
    25,936.80x = 280,794,034.43
  5. Step 5: Solve for x
    x = 280,794,034.43/25,936.80
  6. Step 6: Final answer
    x = 10,826.09

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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.