Home / 12,190.32-18,310.08-7,269.60

Finding the Fourth Proportional to 12,190.32, 18,310.08 and 7,269.60

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Solution

The fourth proportional to 12,190.32, 18,310.08 and 7,269.60 is: 10,919.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.32 : 18,310.08 = 7,269.60 : x
  2. Step 2: Convert to fraction form
    12,190.32/18,310.08 = 7,269.60/x
  3. Step 3: Cross multiply
    12,190.32x = 18,310.08 × 7,269.60
  4. Step 4: Simplify right side
    12,190.32x = 133,106,957.57
  5. Step 5: Solve for x
    x = 133,106,957.57/12,190.32
  6. Step 6: Final answer
    x = 10,919.07

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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.