Home / 20,121.80-30,202.56-15,106.73

Finding the Fourth Proportional to 20,121.80, 30,202.56 and 15,106.73

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Solution

The fourth proportional to 20,121.80, 30,202.56 and 15,106.73 is: 22,675.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,121.80 : 30,202.56 = 15,106.73 : x
  2. Step 2: Convert to fraction form
    20,121.80/30,202.56 = 15,106.73/x
  3. Step 3: Cross multiply
    20,121.80x = 30,202.56 × 15,106.73
  4. Step 4: Simplify right side
    20,121.80x = 456,261,768.22
  5. Step 5: Solve for x
    x = 456,261,768.22/20,121.80
  6. Step 6: Final answer
    x = 22,675.00

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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.