Home / 20,115.45-30,173.49-7,632.18

Finding the Fourth Proportional to 20,115.45, 30,173.49 and 7,632.18

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Solution

The fourth proportional to 20,115.45, 30,173.49 and 7,632.18 is: 11,448.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,115.45 : 30,173.49 = 7,632.18 : x
  2. Step 2: Convert to fraction form
    20,115.45/30,173.49 = 7,632.18/x
  3. Step 3: Cross multiply
    20,115.45x = 30,173.49 × 7,632.18
  4. Step 4: Simplify right side
    20,115.45x = 230,289,506.91
  5. Step 5: Solve for x
    x = 230,289,506.91/20,115.45
  6. Step 6: Final answer
    x = 11,448.39

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Double scale
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Similar ratio
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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.