Home / 20,144.36-30,215.94-11,817.98

Finding the Fourth Proportional to 20,144.36, 30,215.94 and 11,817.98

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Solution

The fourth proportional to 20,144.36, 30,215.94 and 11,817.98 is: 17,726.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,144.36 : 30,215.94 = 11,817.98 : x
  2. Step 2: Convert to fraction form
    20,144.36/30,215.94 = 11,817.98/x
  3. Step 3: Cross multiply
    20,144.36x = 30,215.94 × 11,817.98
  4. Step 4: Simplify right side
    20,144.36x = 357,091,374.60
  5. Step 5: Solve for x
    x = 357,091,374.60/20,144.36
  6. Step 6: Final answer
    x = 17,726.62

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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.