Home / 13,608,912.70-20,413,369.05-5,087,485.90

Finding the Fourth Proportional to 13,608,912.70, 20,413,369.05 and 5,087,485.90

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Solution

The fourth proportional to 13,608,912.70, 20,413,369.05 and 5,087,485.90 is: 7,631,228.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,608,912.70 : 20,413,369.05 = 5,087,485.90 : x
  2. Step 2: Convert to fraction form
    13,608,912.70/20,413,369.05 = 5,087,485.90/x
  3. Step 3: Cross multiply
    13,608,912.70x = 20,413,369.05 × 5,087,485.90
  4. Step 4: Simplify right side
    13,608,912.70x = 103,852,727,213,371.41
  5. Step 5: Solve for x
    x = 103,852,727,213,371.41/13,608,912.70
  6. Step 6: Final answer
    x = 7,631,228.85

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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.