Home / 21,765.44-30,035.94-12,074.78

Finding the Fourth Proportional to 21,765.44, 30,035.94 and 12,074.78

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Solution

The fourth proportional to 21,765.44, 30,035.94 and 12,074.78 is: 16,662.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,765.44 : 30,035.94 = 12,074.78 : x
  2. Step 2: Convert to fraction form
    21,765.44/30,035.94 = 12,074.78/x
  3. Step 3: Cross multiply
    21,765.44x = 30,035.94 × 12,074.78
  4. Step 4: Simplify right side
    21,765.44x = 362,677,367.59
  5. Step 5: Solve for x
    x = 362,677,367.59/21,765.44
  6. Step 6: Final answer
    x = 16,662.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.