Home / 20,137,396.80-30,210,469.20-7,357,881.12

Finding the Fourth Proportional to 20,137,396.80, 30,210,469.20 and 7,357,881.12

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Solution

The fourth proportional to 20,137,396.80, 30,210,469.20 and 7,357,881.12 is: 11,038,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,137,396.80 : 30,210,469.20 = 7,357,881.12 : x
  2. Step 2: Convert to fraction form
    20,137,396.80/30,210,469.20 = 7,357,881.12/x
  3. Step 3: Cross multiply
    20,137,396.80x = 30,210,469.20 × 7,357,881.12
  4. Step 4: Simplify right side
    20,137,396.80x = 222,285,040,953,021.50
  5. Step 5: Solve for x
    x = 222,285,040,953,021.50/20,137,396.80
  6. Step 6: Final answer
    x = 11,038,419.87

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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.