Home / 13,678.62-20,556.40-8,132.96

Finding the Fourth Proportional to 13,678.62, 20,556.40 and 8,132.96

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Solution

The fourth proportional to 13,678.62, 20,556.40 and 8,132.96 is: 12,222.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,678.62 : 20,556.40 = 8,132.96 : x
  2. Step 2: Convert to fraction form
    13,678.62/20,556.40 = 8,132.96/x
  3. Step 3: Cross multiply
    13,678.62x = 20,556.40 × 8,132.96
  4. Step 4: Simplify right side
    13,678.62x = 167,184,378.94
  5. Step 5: Solve for x
    x = 167,184,378.94/13,678.62
  6. Step 6: Final answer
    x = 12,222.31

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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.