Home / 13,517.85-20,260.70-5,618.67

Finding the Fourth Proportional to 13,517.85, 20,260.70 and 5,618.67

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Solution

The fourth proportional to 13,517.85, 20,260.70 and 5,618.67 is: 8,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,517.85 : 20,260.70 = 5,618.67 : x
  2. Step 2: Convert to fraction form
    13,517.85/20,260.70 = 5,618.67/x
  3. Step 3: Cross multiply
    13,517.85x = 20,260.70 × 5,618.67
  4. Step 4: Simplify right side
    13,517.85x = 113,838,180.25
  5. Step 5: Solve for x
    x = 113,838,180.25/13,517.85
  6. Step 6: Final answer
    x = 8,421.33

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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.