Home / 13,479.70-20,220.96-5,166.75

Finding the Fourth Proportional to 13,479.70, 20,220.96 and 5,166.75

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Solution

The fourth proportional to 13,479.70, 20,220.96 and 5,166.75 is: 7,750.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,479.70 : 20,220.96 = 5,166.75 : x
  2. Step 2: Convert to fraction form
    13,479.70/20,220.96 = 5,166.75/x
  3. Step 3: Cross multiply
    13,479.70x = 20,220.96 × 5,166.75
  4. Step 4: Simplify right side
    13,479.70x = 104,476,645.08
  5. Step 5: Solve for x
    x = 104,476,645.08/13,479.70
  6. Step 6: Final answer
    x = 7,750.67

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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.