Home / 13,406.06-20,109.10-9,185.15

Finding the Fourth Proportional to 13,406.06, 20,109.10 and 9,185.15

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Solution

The fourth proportional to 13,406.06, 20,109.10 and 9,185.15 is: 13,777.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,406.06 : 20,109.10 = 9,185.15 : x
  2. Step 2: Convert to fraction form
    13,406.06/20,109.10 = 9,185.15/x
  3. Step 3: Cross multiply
    13,406.06x = 20,109.10 × 9,185.15
  4. Step 4: Simplify right side
    13,406.06x = 184,705,099.87
  5. Step 5: Solve for x
    x = 184,705,099.87/13,406.06
  6. Step 6: Final answer
    x = 13,777.73

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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.