Home / 13,146.21-19,719.90-3,285.54

Finding the Fourth Proportional to 13,146.21, 19,719.90 and 3,285.54

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Solution

The fourth proportional to 13,146.21, 19,719.90 and 3,285.54 is: 4,928.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,146.21 : 19,719.90 = 3,285.54 : x
  2. Step 2: Convert to fraction form
    13,146.21/19,719.90 = 3,285.54/x
  3. Step 3: Cross multiply
    13,146.21x = 19,719.90 × 3,285.54
  4. Step 4: Simplify right side
    13,146.21x = 64,790,520.25
  5. Step 5: Solve for x
    x = 64,790,520.25/13,146.21
  6. Step 6: Final answer
    x = 4,928.46

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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.