Home / 18,865.50-26,028.96-12,155.04

Finding the Fourth Proportional to 18,865.50, 26,028.96 and 12,155.04

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Solution

The fourth proportional to 18,865.50, 26,028.96 and 12,155.04 is: 16,770.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,865.50 : 26,028.96 = 12,155.04 : x
  2. Step 2: Convert to fraction form
    18,865.50/26,028.96 = 12,155.04/x
  3. Step 3: Cross multiply
    18,865.50x = 26,028.96 × 12,155.04
  4. Step 4: Simplify right side
    18,865.50x = 316,383,049.96
  5. Step 5: Solve for x
    x = 316,383,049.96/18,865.50
  6. Step 6: Final answer
    x = 16,770.46

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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.