Home / 20,328.69-30,485.45-6,997.96

Finding the Fourth Proportional to 20,328.69, 30,485.45 and 6,997.96

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Solution

The fourth proportional to 20,328.69, 30,485.45 and 6,997.96 is: 10,494.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,328.69 : 30,485.45 = 6,997.96 : x
  2. Step 2: Convert to fraction form
    20,328.69/30,485.45 = 6,997.96/x
  3. Step 3: Cross multiply
    20,328.69x = 30,485.45 × 6,997.96
  4. Step 4: Simplify right side
    20,328.69x = 213,336,015.28
  5. Step 5: Solve for x
    x = 213,336,015.28/20,328.69
  6. Step 6: Final answer
    x = 10,494.33

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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.