Home / 25,686.78-38,529.62-11,835.78

Finding the Fourth Proportional to 25,686.78, 38,529.62 and 11,835.78

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Solution

The fourth proportional to 25,686.78, 38,529.62 and 11,835.78 is: 17,753.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,686.78 : 38,529.62 = 11,835.78 : x
  2. Step 2: Convert to fraction form
    25,686.78/38,529.62 = 11,835.78/x
  3. Step 3: Cross multiply
    25,686.78x = 38,529.62 × 11,835.78
  4. Step 4: Simplify right side
    25,686.78x = 456,028,105.80
  5. Step 5: Solve for x
    x = 456,028,105.80/25,686.78
  6. Step 6: Final answer
    x = 17,753.42

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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.