Home / 10,921.07-16,380.73-3,900.35

Finding the Fourth Proportional to 10,921.07, 16,380.73 and 3,900.35

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Solution

The fourth proportional to 10,921.07, 16,380.73 and 3,900.35 is: 5,850.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.07 : 16,380.73 = 3,900.35 : x
  2. Step 2: Convert to fraction form
    10,921.07/16,380.73 = 3,900.35/x
  3. Step 3: Cross multiply
    10,921.07x = 16,380.73 × 3,900.35
  4. Step 4: Simplify right side
    10,921.07x = 63,890,539.43
  5. Step 5: Solve for x
    x = 63,890,539.43/10,921.07
  6. Step 6: Final answer
    x = 5,850.21

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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.