Home / 13,815.37-20,723.02-3,427.12

Finding the Fourth Proportional to 13,815.37, 20,723.02 and 3,427.12

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Solution

The fourth proportional to 13,815.37, 20,723.02 and 3,427.12 is: 5,140.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,815.37 : 20,723.02 = 3,427.12 : x
  2. Step 2: Convert to fraction form
    13,815.37/20,723.02 = 3,427.12/x
  3. Step 3: Cross multiply
    13,815.37x = 20,723.02 × 3,427.12
  4. Step 4: Simplify right side
    13,815.37x = 71,020,276.30
  5. Step 5: Solve for x
    x = 71,020,276.30/13,815.37
  6. Step 6: Final answer
    x = 5,140.67

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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.