Home / 13,915.62-20,872.80-4,054.68

Finding the Fourth Proportional to 13,915.62, 20,872.80 and 4,054.68

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Solution

The fourth proportional to 13,915.62, 20,872.80 and 4,054.68 is: 6,081.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.62 : 20,872.80 = 4,054.68 : x
  2. Step 2: Convert to fraction form
    13,915.62/20,872.80 = 4,054.68/x
  3. Step 3: Cross multiply
    13,915.62x = 20,872.80 × 4,054.68
  4. Step 4: Simplify right side
    13,915.62x = 84,632,524.70
  5. Step 5: Solve for x
    x = 84,632,524.70/13,915.62
  6. Step 6: Final answer
    x = 6,081.84

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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.