Home / 13,136.44-18,122.49-8,885.98

Finding the Fourth Proportional to 13,136.44, 18,122.49 and 8,885.98

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Solution

The fourth proportional to 13,136.44, 18,122.49 and 8,885.98 is: 12,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,136.44 : 18,122.49 = 8,885.98 : x
  2. Step 2: Convert to fraction form
    13,136.44/18,122.49 = 8,885.98/x
  3. Step 3: Cross multiply
    13,136.44x = 18,122.49 × 8,885.98
  4. Step 4: Simplify right side
    13,136.44x = 161,036,083.69
  5. Step 5: Solve for x
    x = 161,036,083.69/13,136.44
  6. Step 6: Final answer
    x = 12,258.73

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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.