Home / 25,390.78-38,110.77-12,252.37

Finding the Fourth Proportional to 25,390.78, 38,110.77 and 12,252.37

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Solution

The fourth proportional to 25,390.78, 38,110.77 and 12,252.37 is: 18,390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,390.78 : 38,110.77 = 12,252.37 : x
  2. Step 2: Convert to fraction form
    25,390.78/38,110.77 = 12,252.37/x
  3. Step 3: Cross multiply
    25,390.78x = 38,110.77 × 12,252.37
  4. Step 4: Simplify right side
    25,390.78x = 466,947,255.02
  5. Step 5: Solve for x
    x = 466,947,255.02/25,390.78
  6. Step 6: Final answer
    x = 18,390.43

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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.