Home / 12,812.82-19,220.22-4,919.13

Finding the Fourth Proportional to 12,812.82, 19,220.22 and 4,919.13

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Solution

The fourth proportional to 12,812.82, 19,220.22 and 4,919.13 is: 7,379.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,812.82 : 19,220.22 = 4,919.13 : x
  2. Step 2: Convert to fraction form
    12,812.82/19,220.22 = 4,919.13/x
  3. Step 3: Cross multiply
    12,812.82x = 19,220.22 × 4,919.13
  4. Step 4: Simplify right side
    12,812.82x = 94,546,760.81
  5. Step 5: Solve for x
    x = 94,546,760.81/12,812.82
  6. Step 6: Final answer
    x = 7,379.08

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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.