Home / 20,200.90-30,268.95-13,267.30

Finding the Fourth Proportional to 20,200.90, 30,268.95 and 13,267.30

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Solution

The fourth proportional to 20,200.90, 30,268.95 and 13,267.30 is: 19,879.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,200.90 : 30,268.95 = 13,267.30 : x
  2. Step 2: Convert to fraction form
    20,200.90/30,268.95 = 13,267.30/x
  3. Step 3: Cross multiply
    20,200.90x = 30,268.95 × 13,267.30
  4. Step 4: Simplify right side
    20,200.90x = 401,587,240.34
  5. Step 5: Solve for x
    x = 401,587,240.34/20,200.90
  6. Step 6: Final answer
    x = 19,879.67

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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.