Home / 30,618.44-45,958.62-20,621.96

Finding the Fourth Proportional to 30,618.44, 45,958.62 and 20,621.96

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Solution

The fourth proportional to 30,618.44, 45,958.62 and 20,621.96 is: 30,953.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,618.44 : 45,958.62 = 20,621.96 : x
  2. Step 2: Convert to fraction form
    30,618.44/45,958.62 = 20,621.96/x
  3. Step 3: Cross multiply
    30,618.44x = 45,958.62 × 20,621.96
  4. Step 4: Simplify right side
    30,618.44x = 947,756,823.30
  5. Step 5: Solve for x
    x = 947,756,823.30/30,618.44
  6. Step 6: Final answer
    x = 30,953.79

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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.