Home / 12,811.82-19,223.66-4,911.70

Finding the Fourth Proportional to 12,811.82, 19,223.66 and 4,911.70

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Solution

The fourth proportional to 12,811.82, 19,223.66 and 4,911.70 is: 7,369.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,811.82 : 19,223.66 = 4,911.70 : x
  2. Step 2: Convert to fraction form
    12,811.82/19,223.66 = 4,911.70/x
  3. Step 3: Cross multiply
    12,811.82x = 19,223.66 × 4,911.70
  4. Step 4: Simplify right side
    12,811.82x = 94,420,815.04
  5. Step 5: Solve for x
    x = 94,420,815.04/12,811.82
  6. Step 6: Final answer
    x = 7,369.82

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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.