Home / 20,190.45-30,287.80-7,042.94

Finding the Fourth Proportional to 20,190.45, 30,287.80 and 7,042.94

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Solution

The fourth proportional to 20,190.45, 30,287.80 and 7,042.94 is: 10,565.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.45 : 30,287.80 = 7,042.94 : x
  2. Step 2: Convert to fraction form
    20,190.45/30,287.80 = 7,042.94/x
  3. Step 3: Cross multiply
    20,190.45x = 30,287.80 × 7,042.94
  4. Step 4: Simplify right side
    20,190.45x = 213,315,015.50
  5. Step 5: Solve for x
    x = 213,315,015.50/20,190.45
  6. Step 6: Final answer
    x = 10,565.14

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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.