Home / 13,170.12-19,757.07-3,810.21

Finding the Fourth Proportional to 13,170.12, 19,757.07 and 3,810.21

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Solution

The fourth proportional to 13,170.12, 19,757.07 and 3,810.21 is: 5,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,170.12 : 19,757.07 = 3,810.21 : x
  2. Step 2: Convert to fraction form
    13,170.12/19,757.07 = 3,810.21/x
  3. Step 3: Cross multiply
    13,170.12x = 19,757.07 × 3,810.21
  4. Step 4: Simplify right side
    13,170.12x = 75,278,511.60
  5. Step 5: Solve for x
    x = 75,278,511.60/13,170.12
  6. Step 6: Final answer
    x = 5,715.86

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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.