Home / 12,782,629.50-17,640,410.72-6,981,684.90

Finding the Fourth Proportional to 12,782,629.50, 17,640,410.72 and 6,981,684.90

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Solution

The fourth proportional to 12,782,629.50, 17,640,410.72 and 6,981,684.90 is: 9,634,933.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,782,629.50 : 17,640,410.72 = 6,981,684.90 : x
  2. Step 2: Convert to fraction form
    12,782,629.50/17,640,410.72 = 6,981,684.90/x
  3. Step 3: Cross multiply
    12,782,629.50x = 17,640,410.72 × 6,981,684.90
  4. Step 4: Simplify right side
    12,782,629.50x = 123,159,789,153,622.12
  5. Step 5: Solve for x
    x = 123,159,789,153,622.12/12,782,629.50
  6. Step 6: Final answer
    x = 9,634,933.81

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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.