Home / 13,131.60-19,690.60-3,896.40

Finding the Fourth Proportional to 13,131.60, 19,690.60 and 3,896.40

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Solution

The fourth proportional to 13,131.60, 19,690.60 and 3,896.40 is: 5,842.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.60 : 19,690.60 = 3,896.40 : x
  2. Step 2: Convert to fraction form
    13,131.60/19,690.60 = 3,896.40/x
  3. Step 3: Cross multiply
    13,131.60x = 19,690.60 × 3,896.40
  4. Step 4: Simplify right side
    13,131.60x = 76,722,453.84
  5. Step 5: Solve for x
    x = 76,722,453.84/13,131.60
  6. Step 6: Final answer
    x = 5,842.58

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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.