Home / 20,159.60-30,239.39-5,367.78

Finding the Fourth Proportional to 20,159.60, 30,239.39 and 5,367.78

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Solution

The fourth proportional to 20,159.60, 30,239.39 and 5,367.78 is: 8,051.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,159.60 : 30,239.39 = 5,367.78 : x
  2. Step 2: Convert to fraction form
    20,159.60/30,239.39 = 5,367.78/x
  3. Step 3: Cross multiply
    20,159.60x = 30,239.39 × 5,367.78
  4. Step 4: Simplify right side
    20,159.60x = 162,318,406.27
  5. Step 5: Solve for x
    x = 162,318,406.27/20,159.60
  6. Step 6: Final answer
    x = 8,051.67

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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.