Home / 20,653,819.80-30,980,729.70-18,598,914.60

Finding the Fourth Proportional to 20,653,819.80, 30,980,729.70 and 18,598,914.60

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Solution

The fourth proportional to 20,653,819.80, 30,980,729.70 and 18,598,914.60 is: 27,898,371.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,653,819.80 : 30,980,729.70 = 18,598,914.60 : x
  2. Step 2: Convert to fraction form
    20,653,819.80/30,980,729.70 = 18,598,914.60/x
  3. Step 3: Cross multiply
    20,653,819.80x = 30,980,729.70 × 18,598,914.60
  4. Step 4: Simplify right side
    20,653,819.80x = 576,207,945,935,983.62
  5. Step 5: Solve for x
    x = 576,207,945,935,983.62/20,653,819.80
  6. Step 6: Final answer
    x = 27,898,371.90

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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.