Home / 12,302,813.40-18,454,220.10-7,179,984.60

Finding the Fourth Proportional to 12,302,813.40, 18,454,220.10 and 7,179,984.60

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Solution

The fourth proportional to 12,302,813.40, 18,454,220.10 and 7,179,984.60 is: 10,769,976.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302,813.40 : 18,454,220.10 = 7,179,984.60 : x
  2. Step 2: Convert to fraction form
    12,302,813.40/18,454,220.10 = 7,179,984.60/x
  3. Step 3: Cross multiply
    12,302,813.40x = 18,454,220.10 × 7,179,984.60
  4. Step 4: Simplify right side
    12,302,813.40x = 132,501,016,123,010.47
  5. Step 5: Solve for x
    x = 132,501,016,123,010.47/12,302,813.40
  6. Step 6: Final answer
    x = 10,769,976.90

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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.