Home / 20,490.26-30,738.62-7,342.34

Finding the Fourth Proportional to 20,490.26, 30,738.62 and 7,342.34

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Solution

The fourth proportional to 20,490.26, 30,738.62 and 7,342.34 is: 11,014.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.26 : 30,738.62 = 7,342.34 : x
  2. Step 2: Convert to fraction form
    20,490.26/30,738.62 = 7,342.34/x
  3. Step 3: Cross multiply
    20,490.26x = 30,738.62 × 7,342.34
  4. Step 4: Simplify right side
    20,490.26x = 225,693,208.77
  5. Step 5: Solve for x
    x = 225,693,208.77/20,490.26
  6. Step 6: Final answer
    x = 11,014.66

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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.