Home / 10,921.68-16,384.08-3,994.56

Finding the Fourth Proportional to 10,921.68, 16,384.08 and 3,994.56

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Solution

The fourth proportional to 10,921.68, 16,384.08 and 3,994.56 is: 5,992.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,921.68 : 16,384.08 = 3,994.56 : x
  2. Step 2: Convert to fraction form
    10,921.68/16,384.08 = 3,994.56/x
  3. Step 3: Cross multiply
    10,921.68x = 16,384.08 × 3,994.56
  4. Step 4: Simplify right side
    10,921.68x = 65,447,190.60
  5. Step 5: Solve for x
    x = 65,447,190.60/10,921.68
  6. Step 6: Final answer
    x = 5,992.41

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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.