Home / 20,087.11-30,119.37-8,237.62

Finding the Fourth Proportional to 20,087.11, 30,119.37 and 8,237.62

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Solution

The fourth proportional to 20,087.11, 30,119.37 and 8,237.62 is: 12,351.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,087.11 : 30,119.37 = 8,237.62 : x
  2. Step 2: Convert to fraction form
    20,087.11/30,119.37 = 8,237.62/x
  3. Step 3: Cross multiply
    20,087.11x = 30,119.37 × 8,237.62
  4. Step 4: Simplify right side
    20,087.11x = 248,111,924.70
  5. Step 5: Solve for x
    x = 248,111,924.70/20,087.11
  6. Step 6: Final answer
    x = 12,351.80

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Half scale
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Double scale
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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.