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Finding the Fourth Proportional to 13,137.94, 19,706.86 and 3,903.94

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Solution

The fourth proportional to 13,137.94, 19,706.86 and 3,903.94 is: 5,855.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.94 : 19,706.86 = 3,903.94 : x
  2. Step 2: Convert to fraction form
    13,137.94/19,706.86 = 3,903.94/x
  3. Step 3: Cross multiply
    13,137.94x = 19,706.86 × 3,903.94
  4. Step 4: Simplify right side
    13,137.94x = 76,934,399.03
  5. Step 5: Solve for x
    x = 76,934,399.03/13,137.94
  6. Step 6: Final answer
    x = 5,855.90

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1.5x scale

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.