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Finding the Fourth Proportional to 25,938.70, 38,901.90 and 11,889.96

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Solution

The fourth proportional to 25,938.70, 38,901.90 and 11,889.96 is: 17,832.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,938.70 : 38,901.90 = 11,889.96 : x
  2. Step 2: Convert to fraction form
    25,938.70/38,901.90 = 11,889.96/x
  3. Step 3: Cross multiply
    25,938.70x = 38,901.90 × 11,889.96
  4. Step 4: Simplify right side
    25,938.70x = 462,542,034.92
  5. Step 5: Solve for x
    x = 462,542,034.92/25,938.70
  6. Step 6: Final answer
    x = 17,832.12

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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.