Home / 13,915.50-20,878.37-6,522.36

Finding the Fourth Proportional to 13,915.50, 20,878.37 and 6,522.36

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Solution

The fourth proportional to 13,915.50, 20,878.37 and 6,522.36 is: 9,785.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.50 : 20,878.37 = 6,522.36 : x
  2. Step 2: Convert to fraction form
    13,915.50/20,878.37 = 6,522.36/x
  3. Step 3: Cross multiply
    13,915.50x = 20,878.37 × 6,522.36
  4. Step 4: Simplify right side
    13,915.50x = 136,176,245.35
  5. Step 5: Solve for x
    x = 136,176,245.35/13,915.50
  6. Step 6: Final answer
    x = 9,785.94

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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.