Home / 13,933.70-20,900.64-4,079.84

Finding the Fourth Proportional to 13,933.70, 20,900.64 and 4,079.84

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Solution

The fourth proportional to 13,933.70, 20,900.64 and 4,079.84 is: 6,119.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.70 : 20,900.64 = 4,079.84 : x
  2. Step 2: Convert to fraction form
    13,933.70/20,900.64 = 4,079.84/x
  3. Step 3: Cross multiply
    13,933.70x = 20,900.64 × 4,079.84
  4. Step 4: Simplify right side
    13,933.70x = 85,271,267.10
  5. Step 5: Solve for x
    x = 85,271,267.10/13,933.70
  6. Step 6: Final answer
    x = 6,119.79

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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.