Home / 13,189.92-19,784.88-3,958.08

Finding the Fourth Proportional to 13,189.92, 19,784.88 and 3,958.08

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Solution

The fourth proportional to 13,189.92, 19,784.88 and 3,958.08 is: 5,937.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,189.92 : 19,784.88 = 3,958.08 : x
  2. Step 2: Convert to fraction form
    13,189.92/19,784.88 = 3,958.08/x
  3. Step 3: Cross multiply
    13,189.92x = 19,784.88 × 3,958.08
  4. Step 4: Simplify right side
    13,189.92x = 78,310,137.83
  5. Step 5: Solve for x
    x = 78,310,137.83/13,189.92
  6. Step 6: Final answer
    x = 5,937.12

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Similar ratio
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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.