Home / 13,680.82-20,522.22-4,915.80

Finding the Fourth Proportional to 13,680.82, 20,522.22 and 4,915.80

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Solution

The fourth proportional to 13,680.82, 20,522.22 and 4,915.80 is: 7,374.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,680.82 : 20,522.22 = 4,915.80 : x
  2. Step 2: Convert to fraction form
    13,680.82/20,522.22 = 4,915.80/x
  3. Step 3: Cross multiply
    13,680.82x = 20,522.22 × 4,915.80
  4. Step 4: Simplify right side
    13,680.82x = 100,883,129.08
  5. Step 5: Solve for x
    x = 100,883,129.08/13,680.82
  6. Step 6: Final answer
    x = 7,374.06

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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.