Home / 13,185.85-19,778.78-5,392.84

Finding the Fourth Proportional to 13,185.85, 19,778.78 and 5,392.84

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Solution

The fourth proportional to 13,185.85, 19,778.78 and 5,392.84 is: 8,089.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,185.85 : 19,778.78 = 5,392.84 : x
  2. Step 2: Convert to fraction form
    13,185.85/19,778.78 = 5,392.84/x
  3. Step 3: Cross multiply
    13,185.85x = 19,778.78 × 5,392.84
  4. Step 4: Simplify right side
    13,185.85x = 106,663,795.94
  5. Step 5: Solve for x
    x = 106,663,795.94/13,185.85
  6. Step 6: Final answer
    x = 8,089.26

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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.