Home / 20,745.66-31,106.60-14,179.98

Finding the Fourth Proportional to 20,745.66, 31,106.60 and 14,179.98

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Solution

The fourth proportional to 20,745.66, 31,106.60 and 14,179.98 is: 21,261.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,745.66 : 31,106.60 = 14,179.98 : x
  2. Step 2: Convert to fraction form
    20,745.66/31,106.60 = 14,179.98/x
  3. Step 3: Cross multiply
    20,745.66x = 31,106.60 × 14,179.98
  4. Step 4: Simplify right side
    20,745.66x = 441,090,965.87
  5. Step 5: Solve for x
    x = 441,090,965.87/20,745.66
  6. Step 6: Final answer
    x = 21,261.84

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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.