Home / 13,406.40-20,105.19-4,519.34

Finding the Fourth Proportional to 13,406.40, 20,105.19 and 4,519.34

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Solution

The fourth proportional to 13,406.40, 20,105.19 and 4,519.34 is: 6,777.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.40 : 20,105.19 = 4,519.34 : x
  2. Step 2: Convert to fraction form
    13,406.40/20,105.19 = 4,519.34/x
  3. Step 3: Cross multiply
    13,406.40x = 20,105.19 × 4,519.34
  4. Step 4: Simplify right side
    13,406.40x = 90,862,189.37
  5. Step 5: Solve for x
    x = 90,862,189.37/13,406.40
  6. Step 6: Final answer
    x = 6,777.52

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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.