Home / 12,085.88-18,130.90-3,765.28

Finding the Fourth Proportional to 12,085.88, 18,130.90 and 3,765.28

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Solution

The fourth proportional to 12,085.88, 18,130.90 and 3,765.28 is: 5,648.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,085.88 : 18,130.90 = 3,765.28 : x
  2. Step 2: Convert to fraction form
    12,085.88/18,130.90 = 3,765.28/x
  3. Step 3: Cross multiply
    12,085.88x = 18,130.90 × 3,765.28
  4. Step 4: Simplify right side
    12,085.88x = 68,267,915.15
  5. Step 5: Solve for x
    x = 68,267,915.15/12,085.88
  6. Step 6: Final answer
    x = 5,648.57

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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.