Home / 20,190.75-30,285.81-7,043.07

Finding the Fourth Proportional to 20,190.75, 30,285.81 and 7,043.07

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Solution

The fourth proportional to 20,190.75, 30,285.81 and 7,043.07 is: 10,564.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.75 : 30,285.81 = 7,043.07 : x
  2. Step 2: Convert to fraction form
    20,190.75/30,285.81 = 7,043.07/x
  3. Step 3: Cross multiply
    20,190.75x = 30,285.81 × 7,043.07
  4. Step 4: Simplify right side
    20,190.75x = 213,305,079.84
  5. Step 5: Solve for x
    x = 213,305,079.84/20,190.75
  6. Step 6: Final answer
    x = 10,564.50

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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.