Home / 13,424.88-20,138.54-5,525.56

Finding the Fourth Proportional to 13,424.88, 20,138.54 and 5,525.56

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Solution

The fourth proportional to 13,424.88, 20,138.54 and 5,525.56 is: 8,288.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,424.88 : 20,138.54 = 5,525.56 : x
  2. Step 2: Convert to fraction form
    13,424.88/20,138.54 = 5,525.56/x
  3. Step 3: Cross multiply
    13,424.88x = 20,138.54 × 5,525.56
  4. Step 4: Simplify right side
    13,424.88x = 111,276,633.11
  5. Step 5: Solve for x
    x = 111,276,633.11/13,424.88
  6. Step 6: Final answer
    x = 8,288.84

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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.