Home / 12,790,870.40-17,651,632.02-6,989,896.64

Finding the Fourth Proportional to 12,790,870.40, 17,651,632.02 and 6,989,896.64

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Solution

The fourth proportional to 12,790,870.40, 17,651,632.02 and 6,989,896.64 is: 9,646,183.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790,870.40 : 17,651,632.02 = 6,989,896.64 : x
  2. Step 2: Convert to fraction form
    12,790,870.40/17,651,632.02 = 6,989,896.64/x
  3. Step 3: Cross multiply
    12,790,870.40x = 17,651,632.02 × 6,989,896.64
  4. Step 4: Simplify right side
    12,790,870.40x = 123,383,083,347,114.41
  5. Step 5: Solve for x
    x = 123,383,083,347,114.41/12,790,870.40
  6. Step 6: Final answer
    x = 9,646,183.53

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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.