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Finding the Fourth Proportional to 25,424.82, 38,141.19 and 7,890.48

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Solution

The fourth proportional to 25,424.82, 38,141.19 and 7,890.48 is: 11,836.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,424.82 : 38,141.19 = 7,890.48 : x
  2. Step 2: Convert to fraction form
    25,424.82/38,141.19 = 7,890.48/x
  3. Step 3: Cross multiply
    25,424.82x = 38,141.19 × 7,890.48
  4. Step 4: Simplify right side
    25,424.82x = 300,952,296.87
  5. Step 5: Solve for x
    x = 300,952,296.87/25,424.82
  6. Step 6: Final answer
    x = 11,836.95

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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.