Home / 20,511.32-30,771.64-6,471.26

Finding the Fourth Proportional to 20,511.32, 30,771.64 and 6,471.26

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Solution

The fourth proportional to 20,511.32, 30,771.64 and 6,471.26 is: 9,708.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511.32 : 30,771.64 = 6,471.26 : x
  2. Step 2: Convert to fraction form
    20,511.32/30,771.64 = 6,471.26/x
  3. Step 3: Cross multiply
    20,511.32x = 30,771.64 × 6,471.26
  4. Step 4: Simplify right side
    20,511.32x = 199,131,283.07
  5. Step 5: Solve for x
    x = 199,131,283.07/20,511.32
  6. Step 6: Final answer
    x = 9,708.36

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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.