Home / 11,915.55-17,874.51-4,123.35

Finding the Fourth Proportional to 11,915.55, 17,874.51 and 4,123.35

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Solution

The fourth proportional to 11,915.55, 17,874.51 and 4,123.35 is: 6,185.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,915.55 : 17,874.51 = 4,123.35 : x
  2. Step 2: Convert to fraction form
    11,915.55/17,874.51 = 4,123.35/x
  3. Step 3: Cross multiply
    11,915.55x = 17,874.51 × 4,123.35
  4. Step 4: Simplify right side
    11,915.55x = 73,702,860.81
  5. Step 5: Solve for x
    x = 73,702,860.81/11,915.55
  6. Step 6: Final answer
    x = 6,185.44

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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.