Home / 30,646.70-45,991.24-20,121.77

Finding the Fourth Proportional to 30,646.70, 45,991.24 and 20,121.77

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Solution

The fourth proportional to 30,646.70, 45,991.24 and 20,121.77 is: 30,196.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,646.70 : 45,991.24 = 20,121.77 : x
  2. Step 2: Convert to fraction form
    30,646.70/45,991.24 = 20,121.77/x
  3. Step 3: Cross multiply
    30,646.70x = 45,991.24 × 20,121.77
  4. Step 4: Simplify right side
    30,646.70x = 925,425,072.45
  5. Step 5: Solve for x
    x = 925,425,072.45/30,646.70
  6. Step 6: Final answer
    x = 30,196.56

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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.