Home / 12,132.64-18,197.72-3,812.72

Finding the Fourth Proportional to 12,132.64, 18,197.72 and 3,812.72

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Solution

The fourth proportional to 12,132.64, 18,197.72 and 3,812.72 is: 5,718.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,132.64 : 18,197.72 = 3,812.72 : x
  2. Step 2: Convert to fraction form
    12,132.64/18,197.72 = 3,812.72/x
  3. Step 3: Cross multiply
    12,132.64x = 18,197.72 × 3,812.72
  4. Step 4: Simplify right side
    12,132.64x = 69,382,811.00
  5. Step 5: Solve for x
    x = 69,382,811.00/12,132.64
  6. Step 6: Final answer
    x = 5,718.69

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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.