Home / 13,915.62-20,849.97-6,886.26

Finding the Fourth Proportional to 13,915.62, 20,849.97 and 6,886.26

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Solution

The fourth proportional to 13,915.62, 20,849.97 and 6,886.26 is: 10,317.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.62 : 20,849.97 = 6,886.26 : x
  2. Step 2: Convert to fraction form
    13,915.62/20,849.97 = 6,886.26/x
  3. Step 3: Cross multiply
    13,915.62x = 20,849.97 × 6,886.26
  4. Step 4: Simplify right side
    13,915.62x = 143,578,314.41
  5. Step 5: Solve for x
    x = 143,578,314.41/13,915.62
  6. Step 6: Final answer
    x = 10,317.78

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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.