Home / 13,190.94-18,195.09-9,210.60

Finding the Fourth Proportional to 13,190.94, 18,195.09 and 9,210.60

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Solution

The fourth proportional to 13,190.94, 18,195.09 and 9,210.60 is: 12,704.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,190.94 : 18,195.09 = 9,210.60 : x
  2. Step 2: Convert to fraction form
    13,190.94/18,195.09 = 9,210.60/x
  3. Step 3: Cross multiply
    13,190.94x = 18,195.09 × 9,210.60
  4. Step 4: Simplify right side
    13,190.94x = 167,587,695.95
  5. Step 5: Solve for x
    x = 167,587,695.95/13,190.94
  6. Step 6: Final answer
    x = 12,704.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.