Home / 20,157,162.88-30,217,839.90-7,858,291.36

Finding the Fourth Proportional to 20,157,162.88, 30,217,839.90 and 7,858,291.36

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Solution

The fourth proportional to 20,157,162.88, 30,217,839.90 and 7,858,291.36 is: 11,780,456.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,157,162.88 : 30,217,839.90 = 7,858,291.36 : x
  2. Step 2: Convert to fraction form
    20,157,162.88/30,217,839.90 = 7,858,291.36/x
  3. Step 3: Cross multiply
    20,157,162.88x = 30,217,839.90 × 7,858,291.36
  4. Step 4: Simplify right side
    20,157,162.88x = 237,460,590,204,033.25
  5. Step 5: Solve for x
    x = 237,460,590,204,033.25/20,157,162.88
  6. Step 6: Final answer
    x = 11,780,456.98

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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.