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Finding the Fourth Proportional to 25,188.71, 37,789.38 and 7,419.94

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Solution

The fourth proportional to 25,188.71, 37,789.38 and 7,419.94 is: 11,131.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,188.71 : 37,789.38 = 7,419.94 : x
  2. Step 2: Convert to fraction form
    25,188.71/37,789.38 = 7,419.94/x
  3. Step 3: Cross multiply
    25,188.71x = 37,789.38 × 7,419.94
  4. Step 4: Simplify right side
    25,188.71x = 280,394,837.76
  5. Step 5: Solve for x
    x = 280,394,837.76/25,188.71
  6. Step 6: Final answer
    x = 11,131.77

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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.