Home / 20,415.96-30,609.54-7,763.67

Finding the Fourth Proportional to 20,415.96, 30,609.54 and 7,763.67

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Solution

The fourth proportional to 20,415.96, 30,609.54 and 7,763.67 is: 11,640.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,415.96 : 30,609.54 = 7,763.67 : x
  2. Step 2: Convert to fraction form
    20,415.96/30,609.54 = 7,763.67/x
  3. Step 3: Cross multiply
    20,415.96x = 30,609.54 × 7,763.67
  4. Step 4: Simplify right side
    20,415.96x = 237,642,367.41
  5. Step 5: Solve for x
    x = 237,642,367.41/20,415.96
  6. Step 6: Final answer
    x = 11,640.03

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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.