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Finding the Fourth Proportional to 20,622.60, 30,975.32 and 20,041.22

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Solution

The fourth proportional to 20,622.60, 30,975.32 and 20,041.22 is: 30,102.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,622.60 : 30,975.32 = 20,041.22 : x
  2. Step 2: Convert to fraction form
    20,622.60/30,975.32 = 20,041.22/x
  3. Step 3: Cross multiply
    20,622.60x = 30,975.32 × 20,041.22
  4. Step 4: Simplify right side
    20,622.60x = 620,783,330.23
  5. Step 5: Solve for x
    x = 620,783,330.23/20,622.60
  6. Step 6: Final answer
    x = 30,102.09

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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.