Home / 15,915.56-21,962.12-8,745.26

Finding the Fourth Proportional to 15,915.56, 21,962.12 and 8,745.26

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Solution

The fourth proportional to 15,915.56, 21,962.12 and 8,745.26 is: 12,067.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,915.56 : 21,962.12 = 8,745.26 : x
  2. Step 2: Convert to fraction form
    15,915.56/21,962.12 = 8,745.26/x
  3. Step 3: Cross multiply
    15,915.56x = 21,962.12 × 8,745.26
  4. Step 4: Simplify right side
    15,915.56x = 192,064,449.55
  5. Step 5: Solve for x
    x = 192,064,449.55/15,915.56
  6. Step 6: Final answer
    x = 12,067.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.