Home / 13,915.44-20,858.04-6,515.28

Finding the Fourth Proportional to 13,915.44, 20,858.04 and 6,515.28

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Solution

The fourth proportional to 13,915.44, 20,858.04 and 6,515.28 is: 9,765.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.44 : 20,858.04 = 6,515.28 : x
  2. Step 2: Convert to fraction form
    13,915.44/20,858.04 = 6,515.28/x
  3. Step 3: Cross multiply
    13,915.44x = 20,858.04 × 6,515.28
  4. Step 4: Simplify right side
    13,915.44x = 135,895,970.85
  5. Step 5: Solve for x
    x = 135,895,970.85/13,915.44
  6. Step 6: Final answer
    x = 9,765.84

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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.