Home / 20,550.04-30,825.06-11,778.92

Finding the Fourth Proportional to 20,550.04, 30,825.06 and 11,778.92

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Solution

The fourth proportional to 20,550.04, 30,825.06 and 11,778.92 is: 17,668.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,550.04 : 30,825.06 = 11,778.92 : x
  2. Step 2: Convert to fraction form
    20,550.04/30,825.06 = 11,778.92/x
  3. Step 3: Cross multiply
    20,550.04x = 30,825.06 × 11,778.92
  4. Step 4: Simplify right side
    20,550.04x = 363,085,915.74
  5. Step 5: Solve for x
    x = 363,085,915.74/20,550.04
  6. Step 6: Final answer
    x = 17,668.38

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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.