Home / 28,738.08-43,121.60-13,159.36

Finding the Fourth Proportional to 28,738.08, 43,121.60 and 13,159.36

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Solution

The fourth proportional to 28,738.08, 43,121.60 and 13,159.36 is: 19,745.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,738.08 : 43,121.60 = 13,159.36 : x
  2. Step 2: Convert to fraction form
    28,738.08/43,121.60 = 13,159.36/x
  3. Step 3: Cross multiply
    28,738.08x = 43,121.60 × 13,159.36
  4. Step 4: Simplify right side
    28,738.08x = 567,452,658.18
  5. Step 5: Solve for x
    x = 567,452,658.18/28,738.08
  6. Step 6: Final answer
    x = 19,745.67

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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.