Home / 20,190.21-30,289.10-7,042.29

Finding the Fourth Proportional to 20,190.21, 30,289.10 and 7,042.29

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Solution

The fourth proportional to 20,190.21, 30,289.10 and 7,042.29 is: 10,564.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,190.21 : 30,289.10 = 7,042.29 : x
  2. Step 2: Convert to fraction form
    20,190.21/30,289.10 = 7,042.29/x
  3. Step 3: Cross multiply
    20,190.21x = 30,289.10 × 7,042.29
  4. Step 4: Simplify right side
    20,190.21x = 213,304,590.83
  5. Step 5: Solve for x
    x = 213,304,590.83/20,190.21
  6. Step 6: Final answer
    x = 10,564.75

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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.