Home / 20,102,828.40-30,121,000.20-11,568,279.60

Finding the Fourth Proportional to 20,102,828.40, 30,121,000.20 and 11,568,279.60

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Solution

The fourth proportional to 20,102,828.40, 30,121,000.20 and 11,568,279.60 is: 17,333,289.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,102,828.40 : 30,121,000.20 = 11,568,279.60 : x
  2. Step 2: Convert to fraction form
    20,102,828.40/30,121,000.20 = 11,568,279.60/x
  3. Step 3: Cross multiply
    20,102,828.40x = 30,121,000.20 × 11,568,279.60
  4. Step 4: Simplify right side
    20,102,828.40x = 348,448,152,145,255.88
  5. Step 5: Solve for x
    x = 348,448,152,145,255.88/20,102,828.40
  6. Step 6: Final answer
    x = 17,333,289.88

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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.