Home / 13,665.19-20,485.18-5,350.65

Finding the Fourth Proportional to 13,665.19, 20,485.18 and 5,350.65

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Solution

The fourth proportional to 13,665.19, 20,485.18 and 5,350.65 is: 8,021.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,665.19 : 20,485.18 = 5,350.65 : x
  2. Step 2: Convert to fraction form
    13,665.19/20,485.18 = 5,350.65/x
  3. Step 3: Cross multiply
    13,665.19x = 20,485.18 × 5,350.65
  4. Step 4: Simplify right side
    13,665.19x = 109,609,028.37
  5. Step 5: Solve for x
    x = 109,609,028.37/13,665.19
  6. Step 6: Final answer
    x = 8,021.04

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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.