Home / 12,915.08-19,361.28-8,523.26

Finding the Fourth Proportional to 12,915.08, 19,361.28 and 8,523.26

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Solution

The fourth proportional to 12,915.08, 19,361.28 and 8,523.26 is: 12,777.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,915.08 : 19,361.28 = 8,523.26 : x
  2. Step 2: Convert to fraction form
    12,915.08/19,361.28 = 8,523.26/x
  3. Step 3: Cross multiply
    12,915.08x = 19,361.28 × 8,523.26
  4. Step 4: Simplify right side
    12,915.08x = 165,021,223.37
  5. Step 5: Solve for x
    x = 165,021,223.37/12,915.08
  6. Step 6: Final answer
    x = 12,777.41

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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.