Home / 13,830.32-20,745.45-3,442.07

Finding the Fourth Proportional to 13,830.32, 20,745.45 and 3,442.07

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Solution

The fourth proportional to 13,830.32, 20,745.45 and 3,442.07 is: 5,163.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,830.32 : 20,745.45 = 3,442.07 : x
  2. Step 2: Convert to fraction form
    13,830.32/20,745.45 = 3,442.07/x
  3. Step 3: Cross multiply
    13,830.32x = 20,745.45 × 3,442.07
  4. Step 4: Simplify right side
    13,830.32x = 71,407,291.08
  5. Step 5: Solve for x
    x = 71,407,291.08/13,830.32
  6. Step 6: Final answer
    x = 5,163.10

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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.