Home / 14,512.78-20,027.41-8,139.37

Finding the Fourth Proportional to 14,512.78, 20,027.41 and 8,139.37

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Solution

The fourth proportional to 14,512.78, 20,027.41 and 8,139.37 is: 11,232.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,512.78 : 20,027.41 = 8,139.37 : x
  2. Step 2: Convert to fraction form
    14,512.78/20,027.41 = 8,139.37/x
  3. Step 3: Cross multiply
    14,512.78x = 20,027.41 × 8,139.37
  4. Step 4: Simplify right side
    14,512.78x = 163,010,359.30
  5. Step 5: Solve for x
    x = 163,010,359.30/14,512.78
  6. Step 6: Final answer
    x = 11,232.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.