Home / 13,858.20-20,750.34-7,270.62

Finding the Fourth Proportional to 13,858.20, 20,750.34 and 7,270.62

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Solution

The fourth proportional to 13,858.20, 20,750.34 and 7,270.62 is: 10,886.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,858.20 : 20,750.34 = 7,270.62 : x
  2. Step 2: Convert to fraction form
    13,858.20/20,750.34 = 7,270.62/x
  3. Step 3: Cross multiply
    13,858.20x = 20,750.34 × 7,270.62
  4. Step 4: Simplify right side
    13,858.20x = 150,867,837.01
  5. Step 5: Solve for x
    x = 150,867,837.01/13,858.20
  6. Step 6: Final answer
    x = 10,886.54

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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.