Home / 13,638.37-20,455.23-3,775.34

Finding the Fourth Proportional to 13,638.37, 20,455.23 and 3,775.34

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Solution

The fourth proportional to 13,638.37, 20,455.23 and 3,775.34 is: 5,662.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,638.37 : 20,455.23 = 3,775.34 : x
  2. Step 2: Convert to fraction form
    13,638.37/20,455.23 = 3,775.34/x
  3. Step 3: Cross multiply
    13,638.37x = 20,455.23 × 3,775.34
  4. Step 4: Simplify right side
    13,638.37x = 77,225,448.03
  5. Step 5: Solve for x
    x = 77,225,448.03/13,638.37
  6. Step 6: Final answer
    x = 5,662.37

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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.