Home / 12,919.75-19,374.61-5,021.22

Finding the Fourth Proportional to 12,919.75, 19,374.61 and 5,021.22

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Solution

The fourth proportional to 12,919.75, 19,374.61 and 5,021.22 is: 7,529.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,919.75 : 19,374.61 = 5,021.22 : x
  2. Step 2: Convert to fraction form
    12,919.75/19,374.61 = 5,021.22/x
  3. Step 3: Cross multiply
    12,919.75x = 19,374.61 × 5,021.22
  4. Step 4: Simplify right side
    12,919.75x = 97,284,195.76
  5. Step 5: Solve for x
    x = 97,284,195.76/12,919.75
  6. Step 6: Final answer
    x = 7,529.88

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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.