Home / 21,193,211.20-31,789,816.80-5,236,859.20

Finding the Fourth Proportional to 21,193,211.20, 31,789,816.80 and 5,236,859.20

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Solution

The fourth proportional to 21,193,211.20, 31,789,816.80 and 5,236,859.20 is: 7,855,288.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,193,211.20 : 31,789,816.80 = 5,236,859.20 : x
  2. Step 2: Convert to fraction form
    21,193,211.20/31,789,816.80 = 5,236,859.20/x
  3. Step 3: Cross multiply
    21,193,211.20x = 31,789,816.80 × 5,236,859.20
  4. Step 4: Simplify right side
    21,193,211.20x = 166,478,794,575,394.56
  5. Step 5: Solve for x
    x = 166,478,794,575,394.56/21,193,211.20
  6. Step 6: Final answer
    x = 7,855,288.80

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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.