Home / 13,933.56-20,900.40-5,166.12

Finding the Fourth Proportional to 13,933.56, 20,900.40 and 5,166.12

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Solution

The fourth proportional to 13,933.56, 20,900.40 and 5,166.12 is: 7,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,933.56 : 20,900.40 = 5,166.12 : x
  2. Step 2: Convert to fraction form
    13,933.56/20,900.40 = 5,166.12/x
  3. Step 3: Cross multiply
    13,933.56x = 20,900.40 × 5,166.12
  4. Step 4: Simplify right side
    13,933.56x = 107,973,974.45
  5. Step 5: Solve for x
    x = 107,973,974.45/13,933.56
  6. Step 6: Final answer
    x = 7,749.20

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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.