Home / 20,212,857.80-30,319,286.70-7,430,717.60

Finding the Fourth Proportional to 20,212,857.80, 30,319,286.70 and 7,430,717.60

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Solution

The fourth proportional to 20,212,857.80, 30,319,286.70 and 7,430,717.60 is: 11,146,076.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,212,857.80 : 30,319,286.70 = 7,430,717.60 : x
  2. Step 2: Convert to fraction form
    20,212,857.80/30,319,286.70 = 7,430,717.60/x
  3. Step 3: Cross multiply
    20,212,857.80x = 30,319,286.70 × 7,430,717.60
  4. Step 4: Simplify right side
    20,212,857.80x = 225,294,057,301,135.91
  5. Step 5: Solve for x
    x = 225,294,057,301,135.91/20,212,857.80
  6. Step 6: Final answer
    x = 11,146,076.40

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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.