Home / 11,391.60-17,087.40-4,815.60

Finding the Fourth Proportional to 11,391.60, 17,087.40 and 4,815.60

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Solution

The fourth proportional to 11,391.60, 17,087.40 and 4,815.60 is: 7,223.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,391.60 : 17,087.40 = 4,815.60 : x
  2. Step 2: Convert to fraction form
    11,391.60/17,087.40 = 4,815.60/x
  3. Step 3: Cross multiply
    11,391.60x = 17,087.40 × 4,815.60
  4. Step 4: Simplify right side
    11,391.60x = 82,286,083.44
  5. Step 5: Solve for x
    x = 82,286,083.44/11,391.60
  6. Step 6: Final answer
    x = 7,223.40

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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.