Home / 20,190.33-30,285.63-7,042.65

Finding the Fourth Proportional to 20,190.33, 30,285.63 and 7,042.65

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Solution

The fourth proportional to 20,190.33, 30,285.63 and 7,042.65 is: 10,564.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.33 : 30,285.63 = 7,042.65 : x
  2. Step 2: Convert to fraction form
    20,190.33/30,285.63 = 7,042.65/x
  3. Step 3: Cross multiply
    20,190.33x = 30,285.63 × 7,042.65
  4. Step 4: Simplify right side
    20,190.33x = 213,291,092.12
  5. Step 5: Solve for x
    x = 213,291,092.12/20,190.33
  6. Step 6: Final answer
    x = 10,564.02

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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.