Home / 25,415.82-38,136.74-12,103.88

Finding the Fourth Proportional to 25,415.82, 38,136.74 and 12,103.88

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Solution

The fourth proportional to 25,415.82, 38,136.74 and 12,103.88 is: 18,162.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,415.82 : 38,136.74 = 12,103.88 : x
  2. Step 2: Convert to fraction form
    25,415.82/38,136.74 = 12,103.88/x
  3. Step 3: Cross multiply
    25,415.82x = 38,136.74 × 12,103.88
  4. Step 4: Simplify right side
    25,415.82x = 461,602,273.35
  5. Step 5: Solve for x
    x = 461,602,273.35/25,415.82
  6. Step 6: Final answer
    x = 18,162.01

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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.