Home / 20,716.20-31,025.70-14,106.60

Finding the Fourth Proportional to 20,716.20, 31,025.70 and 14,106.60

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Solution

The fourth proportional to 20,716.20, 31,025.70 and 14,106.60 is: 21,126.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,716.20 : 31,025.70 = 14,106.60 : x
  2. Step 2: Convert to fraction form
    20,716.20/31,025.70 = 14,106.60/x
  3. Step 3: Cross multiply
    20,716.20x = 31,025.70 × 14,106.60
  4. Step 4: Simplify right side
    20,716.20x = 437,667,139.62
  5. Step 5: Solve for x
    x = 437,667,139.62/20,716.20
  6. Step 6: Final answer
    x = 21,126.81

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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.