Home / 11,324.31-16,980.30-3,928.20

Finding the Fourth Proportional to 11,324.31, 16,980.30 and 3,928.20

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Solution

The fourth proportional to 11,324.31, 16,980.30 and 3,928.20 is: 5,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,324.31 : 16,980.30 = 3,928.20 : x
  2. Step 2: Convert to fraction form
    11,324.31/16,980.30 = 3,928.20/x
  3. Step 3: Cross multiply
    11,324.31x = 16,980.30 × 3,928.20
  4. Step 4: Simplify right side
    11,324.31x = 66,702,014.46
  5. Step 5: Solve for x
    x = 66,702,014.46/11,324.31
  6. Step 6: Final answer
    x = 5,890.16

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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.