Home / 20,284.82-30,427.22-8,438.37

Finding the Fourth Proportional to 20,284.82, 30,427.22 and 8,438.37

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Solution

The fourth proportional to 20,284.82, 30,427.22 and 8,438.37 is: 12,657.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,284.82 : 30,427.22 = 8,438.37 : x
  2. Step 2: Convert to fraction form
    20,284.82/30,427.22 = 8,438.37/x
  3. Step 3: Cross multiply
    20,284.82x = 30,427.22 × 8,438.37
  4. Step 4: Simplify right side
    20,284.82x = 256,756,047.43
  5. Step 5: Solve for x
    x = 256,756,047.43/20,284.82
  6. Step 6: Final answer
    x = 12,657.55

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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.