Home / 13,485.82-20,231.70-4,125.91

Finding the Fourth Proportional to 13,485.82, 20,231.70 and 4,125.91

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Solution

The fourth proportional to 13,485.82, 20,231.70 and 4,125.91 is: 6,189.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,485.82 : 20,231.70 = 4,125.91 : x
  2. Step 2: Convert to fraction form
    13,485.82/20,231.70 = 4,125.91/x
  3. Step 3: Cross multiply
    13,485.82x = 20,231.70 × 4,125.91
  4. Step 4: Simplify right side
    13,485.82x = 83,474,173.35
  5. Step 5: Solve for x
    x = 83,474,173.35/13,485.82
  6. Step 6: Final answer
    x = 6,189.77

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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.