Home / 15,453.44-21,325.68-8,379.84

Finding the Fourth Proportional to 15,453.44, 21,325.68 and 8,379.84

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Solution

The fourth proportional to 15,453.44, 21,325.68 and 8,379.84 is: 11,564.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.44 : 21,325.68 = 8,379.84 : x
  2. Step 2: Convert to fraction form
    15,453.44/21,325.68 = 8,379.84/x
  3. Step 3: Cross multiply
    15,453.44x = 21,325.68 × 8,379.84
  4. Step 4: Simplify right side
    15,453.44x = 178,705,786.29
  5. Step 5: Solve for x
    x = 178,705,786.29/15,453.44
  6. Step 6: Final answer
    x = 11,564.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.