Home / 12,190.96-18,287.16-3,426.60

Finding the Fourth Proportional to 12,190.96, 18,287.16 and 3,426.60

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Solution

The fourth proportional to 12,190.96, 18,287.16 and 3,426.60 is: 5,140.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,190.96 : 18,287.16 = 3,426.60 : x
  2. Step 2: Convert to fraction form
    12,190.96/18,287.16 = 3,426.60/x
  3. Step 3: Cross multiply
    12,190.96x = 18,287.16 × 3,426.60
  4. Step 4: Simplify right side
    12,190.96x = 62,662,782.46
  5. Step 5: Solve for x
    x = 62,662,782.46/12,190.96
  6. Step 6: Final answer
    x = 5,140.10

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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.