Home / 13,749.74-20,623.39-3,888.80

Finding the Fourth Proportional to 13,749.74, 20,623.39 and 3,888.80

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Solution

The fourth proportional to 13,749.74, 20,623.39 and 3,888.80 is: 5,832.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,749.74 : 20,623.39 = 3,888.80 : x
  2. Step 2: Convert to fraction form
    13,749.74/20,623.39 = 3,888.80/x
  3. Step 3: Cross multiply
    13,749.74x = 20,623.39 × 3,888.80
  4. Step 4: Simplify right side
    13,749.74x = 80,200,239.03
  5. Step 5: Solve for x
    x = 80,200,239.03/13,749.74
  6. Step 6: Final answer
    x = 5,832.85

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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.