Home / 12,825.24-19,243.80-5,431.44

Finding the Fourth Proportional to 12,825.24, 19,243.80 and 5,431.44

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Solution

The fourth proportional to 12,825.24, 19,243.80 and 5,431.44 is: 8,149.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.24 : 19,243.80 = 5,431.44 : x
  2. Step 2: Convert to fraction form
    12,825.24/19,243.80 = 5,431.44/x
  3. Step 3: Cross multiply
    12,825.24x = 19,243.80 × 5,431.44
  4. Step 4: Simplify right side
    12,825.24x = 104,521,545.07
  5. Step 5: Solve for x
    x = 104,521,545.07/12,825.24
  6. Step 6: Final answer
    x = 8,149.68

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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.