Home / 13,728.18-20,590.44-3,868.22

Finding the Fourth Proportional to 13,728.18, 20,590.44 and 3,868.22

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Solution

The fourth proportional to 13,728.18, 20,590.44 and 3,868.22 is: 5,801.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,728.18 : 20,590.44 = 3,868.22 : x
  2. Step 2: Convert to fraction form
    13,728.18/20,590.44 = 3,868.22/x
  3. Step 3: Cross multiply
    13,728.18x = 20,590.44 × 3,868.22
  4. Step 4: Simplify right side
    13,728.18x = 79,648,388.79
  5. Step 5: Solve for x
    x = 79,648,388.79/13,728.18
  6. Step 6: Final answer
    x = 5,801.82

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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.