Home / 13,137.75-19,706.64-3,903.75

Finding the Fourth Proportional to 13,137.75, 19,706.64 and 3,903.75

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Solution

The fourth proportional to 13,137.75, 19,706.64 and 3,903.75 is: 5,855.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,137.75 : 19,706.64 = 3,903.75 : x
  2. Step 2: Convert to fraction form
    13,137.75/19,706.64 = 3,903.75/x
  3. Step 3: Cross multiply
    13,137.75x = 19,706.64 × 3,903.75
  4. Step 4: Simplify right side
    13,137.75x = 76,929,795.90
  5. Step 5: Solve for x
    x = 76,929,795.90/13,137.75
  6. Step 6: Final answer
    x = 5,855.63

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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.