Home / 13,147.50-19,720.98-3,286.74

Finding the Fourth Proportional to 13,147.50, 19,720.98 and 3,286.74

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Solution

The fourth proportional to 13,147.50, 19,720.98 and 3,286.74 is: 4,930.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,147.50 : 19,720.98 = 3,286.74 : x
  2. Step 2: Convert to fraction form
    13,147.50/19,720.98 = 3,286.74/x
  3. Step 3: Cross multiply
    13,147.50x = 19,720.98 × 3,286.74
  4. Step 4: Simplify right side
    13,147.50x = 64,817,733.81
  5. Step 5: Solve for x
    x = 64,817,733.81/13,147.50
  6. Step 6: Final answer
    x = 4,930.04

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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.