Home / 21,978,782.10-30,332,535.03-12,192,381.54

Finding the Fourth Proportional to 21,978,782.10, 30,332,535.03 and 12,192,381.54

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Solution

The fourth proportional to 21,978,782.10, 30,332,535.03 and 12,192,381.54 is: 16,826,493.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,978,782.10 : 30,332,535.03 = 12,192,381.54 : x
  2. Step 2: Convert to fraction form
    21,978,782.10/30,332,535.03 = 12,192,381.54/x
  3. Step 3: Cross multiply
    21,978,782.10x = 30,332,535.03 × 12,192,381.54
  4. Step 4: Simplify right side
    21,978,782.10x = 369,825,840,161,175.31
  5. Step 5: Solve for x
    x = 369,825,840,161,175.31/21,978,782.10
  6. Step 6: Final answer
    x = 16,826,493.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.