Home / 11,915.89-17,855.60-6,370.02

Finding the Fourth Proportional to 11,915.89, 17,855.60 and 6,370.02

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Solution

The fourth proportional to 11,915.89, 17,855.60 and 6,370.02 is: 9,545.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.89 : 17,855.60 = 6,370.02 : x
  2. Step 2: Convert to fraction form
    11,915.89/17,855.60 = 6,370.02/x
  3. Step 3: Cross multiply
    11,915.89x = 17,855.60 × 6,370.02
  4. Step 4: Simplify right side
    11,915.89x = 113,740,529.11
  5. Step 5: Solve for x
    x = 113,740,529.11/11,915.89
  6. Step 6: Final answer
    x = 9,545.28

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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.