Home / 20,190.49-30,285.46-7,042.81

Finding the Fourth Proportional to 20,190.49, 30,285.46 and 7,042.81

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Solution

The fourth proportional to 20,190.49, 30,285.46 and 7,042.81 is: 10,564.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.49 : 30,285.46 = 7,042.81 : x
  2. Step 2: Convert to fraction form
    20,190.49/30,285.46 = 7,042.81/x
  3. Step 3: Cross multiply
    20,190.49x = 30,285.46 × 7,042.81
  4. Step 4: Simplify right side
    20,190.49x = 213,294,740.54
  5. Step 5: Solve for x
    x = 213,294,740.54/20,190.49
  6. Step 6: Final answer
    x = 10,564.12

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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.