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Finding the Fourth Proportional to 36,604.40, 54,912.29 and 12,915.09

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Solution

The fourth proportional to 36,604.40, 54,912.29 and 12,915.09 is: 19,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,604.40 : 54,912.29 = 12,915.09 : x
  2. Step 2: Convert to fraction form
    36,604.40/54,912.29 = 12,915.09/x
  3. Step 3: Cross multiply
    36,604.40x = 54,912.29 × 12,915.09
  4. Step 4: Simplify right side
    36,604.40x = 709,197,102.88
  5. Step 5: Solve for x
    x = 709,197,102.88/36,604.40
  6. Step 6: Final answer
    x = 19,374.64

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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.