Home / 25,515.68-38,273.58-7,985.54

Finding the Fourth Proportional to 25,515.68, 38,273.58 and 7,985.54

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Solution

The fourth proportional to 25,515.68, 38,273.58 and 7,985.54 is: 11,978.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,515.68 : 38,273.58 = 7,985.54 : x
  2. Step 2: Convert to fraction form
    25,515.68/38,273.58 = 7,985.54/x
  3. Step 3: Cross multiply
    25,515.68x = 38,273.58 × 7,985.54
  4. Step 4: Simplify right side
    25,515.68x = 305,635,204.03
  5. Step 5: Solve for x
    x = 305,635,204.03/25,515.68
  6. Step 6: Final answer
    x = 11,978.33

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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.