Home / 12,685.24-19,028.76-3,919.02

Finding the Fourth Proportional to 12,685.24, 19,028.76 and 3,919.02

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Solution

The fourth proportional to 12,685.24, 19,028.76 and 3,919.02 is: 5,878.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,685.24 : 19,028.76 = 3,919.02 : x
  2. Step 2: Convert to fraction form
    12,685.24/19,028.76 = 3,919.02/x
  3. Step 3: Cross multiply
    12,685.24x = 19,028.76 × 3,919.02
  4. Step 4: Simplify right side
    12,685.24x = 74,574,091.02
  5. Step 5: Solve for x
    x = 74,574,091.02/12,685.24
  6. Step 6: Final answer
    x = 5,878.81

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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.