Home / 20,745.54-31,106.70-14,179.68

Finding the Fourth Proportional to 20,745.54, 31,106.70 and 14,179.68

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Solution

The fourth proportional to 20,745.54, 31,106.70 and 14,179.68 is: 21,261.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.54 : 31,106.70 = 14,179.68 : x
  2. Step 2: Convert to fraction form
    20,745.54/31,106.70 = 14,179.68/x
  3. Step 3: Cross multiply
    20,745.54x = 31,106.70 × 14,179.68
  4. Step 4: Simplify right side
    20,745.54x = 441,083,051.86
  5. Step 5: Solve for x
    x = 441,083,051.86/20,745.54
  6. Step 6: Final answer
    x = 21,261.58

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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.