Home / 25,928.64-38,896.74-12,781.80

Finding the Fourth Proportional to 25,928.64, 38,896.74 and 12,781.80

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Solution

The fourth proportional to 25,928.64, 38,896.74 and 12,781.80 is: 19,174.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,928.64 : 38,896.74 = 12,781.80 : x
  2. Step 2: Convert to fraction form
    25,928.64/38,896.74 = 12,781.80/x
  3. Step 3: Cross multiply
    25,928.64x = 38,896.74 × 12,781.80
  4. Step 4: Simplify right side
    25,928.64x = 497,170,351.33
  5. Step 5: Solve for x
    x = 497,170,351.33/25,928.64
  6. Step 6: Final answer
    x = 19,174.56

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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.