Home / 20,811.35-31,284.70-16,696.37

Finding the Fourth Proportional to 20,811.35, 31,284.70 and 16,696.37

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Solution

The fourth proportional to 20,811.35, 31,284.70 and 16,696.37 is: 25,098.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,811.35 : 31,284.70 = 16,696.37 : x
  2. Step 2: Convert to fraction form
    20,811.35/31,284.70 = 16,696.37/x
  3. Step 3: Cross multiply
    20,811.35x = 31,284.70 × 16,696.37
  4. Step 4: Simplify right side
    20,811.35x = 522,340,963.01
  5. Step 5: Solve for x
    x = 522,340,963.01/20,811.35
  6. Step 6: Final answer
    x = 25,098.85

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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.