Home / 11,325.12-16,986.72-3,928.32

Finding the Fourth Proportional to 11,325.12, 16,986.72 and 3,928.32

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Solution

The fourth proportional to 11,325.12, 16,986.72 and 3,928.32 is: 5,892.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,325.12 : 16,986.72 = 3,928.32 : x
  2. Step 2: Convert to fraction form
    11,325.12/16,986.72 = 3,928.32/x
  3. Step 3: Cross multiply
    11,325.12x = 16,986.72 × 3,928.32
  4. Step 4: Simplify right side
    11,325.12x = 66,729,271.91
  5. Step 5: Solve for x
    x = 66,729,271.91/11,325.12
  6. Step 6: Final answer
    x = 5,892.15

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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.