Home / 25,600.43-38,389.37-12,942.39

Finding the Fourth Proportional to 25,600.43, 38,389.37 and 12,942.39

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Solution

The fourth proportional to 25,600.43, 38,389.37 and 12,942.39 is: 19,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,600.43 : 38,389.37 = 12,942.39 : x
  2. Step 2: Convert to fraction form
    25,600.43/38,389.37 = 12,942.39/x
  3. Step 3: Cross multiply
    25,600.43x = 38,389.37 × 12,942.39
  4. Step 4: Simplify right side
    25,600.43x = 496,850,133.68
  5. Step 5: Solve for x
    x = 496,850,133.68/25,600.43
  6. Step 6: Final answer
    x = 19,407.89

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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.