Home / 13,020.21-19,529.87-3,660.30

Finding the Fourth Proportional to 13,020.21, 19,529.87 and 3,660.30

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Solution

The fourth proportional to 13,020.21, 19,529.87 and 3,660.30 is: 5,490.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,020.21 : 19,529.87 = 3,660.30 : x
  2. Step 2: Convert to fraction form
    13,020.21/19,529.87 = 3,660.30/x
  3. Step 3: Cross multiply
    13,020.21x = 19,529.87 × 3,660.30
  4. Step 4: Simplify right side
    13,020.21x = 71,485,164.86
  5. Step 5: Solve for x
    x = 71,485,164.86/13,020.21
  6. Step 6: Final answer
    x = 5,490.32

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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.