Home / 12,979,206.80-17,909,315.78-7,471,517.41

Finding the Fourth Proportional to 12,979,206.80, 17,909,315.78 and 7,471,517.41

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Solution

The fourth proportional to 12,979,206.80, 17,909,315.78 and 7,471,517.41 is: 10,309,548.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,979,206.80 : 17,909,315.78 = 7,471,517.41 : x
  2. Step 2: Convert to fraction form
    12,979,206.80/17,909,315.78 = 7,471,517.41/x
  3. Step 3: Cross multiply
    12,979,206.80x = 17,909,315.78 × 7,471,517.41
  4. Step 4: Simplify right side
    12,979,206.80x = 133,809,764,569,326.84
  5. Step 5: Solve for x
    x = 133,809,764,569,326.84/12,979,206.80
  6. Step 6: Final answer
    x = 10,309,548.70

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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.