Home / 21,276.18-31,910.04-20,222.37

Finding the Fourth Proportional to 21,276.18, 31,910.04 and 20,222.37

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Solution

The fourth proportional to 21,276.18, 31,910.04 and 20,222.37 is: 30,329.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,276.18 : 31,910.04 = 20,222.37 : x
  2. Step 2: Convert to fraction form
    21,276.18/31,910.04 = 20,222.37/x
  3. Step 3: Cross multiply
    21,276.18x = 31,910.04 × 20,222.37
  4. Step 4: Simplify right side
    21,276.18x = 645,296,635.59
  5. Step 5: Solve for x
    x = 645,296,635.59/21,276.18
  6. Step 6: Final answer
    x = 30,329.53

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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.