Home / 20,281.48-30,423.26-6,431.56

Finding the Fourth Proportional to 20,281.48, 30,423.26 and 6,431.56

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Solution

The fourth proportional to 20,281.48, 30,423.26 and 6,431.56 is: 9,647.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.48 : 30,423.26 = 6,431.56 : x
  2. Step 2: Convert to fraction form
    20,281.48/30,423.26 = 6,431.56/x
  3. Step 3: Cross multiply
    20,281.48x = 30,423.26 × 6,431.56
  4. Step 4: Simplify right side
    20,281.48x = 195,669,022.09
  5. Step 5: Solve for x
    x = 195,669,022.09/20,281.48
  6. Step 6: Final answer
    x = 9,647.67

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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.