Home / 15,453.21-21,325.44-8,379.64

Finding the Fourth Proportional to 15,453.21, 21,325.44 and 8,379.64

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Solution

The fourth proportional to 15,453.21, 21,325.44 and 8,379.64 is: 11,563.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.21 : 21,325.44 = 8,379.64 : x
  2. Step 2: Convert to fraction form
    15,453.21/21,325.44 = 8,379.64/x
  3. Step 3: Cross multiply
    15,453.21x = 21,325.44 × 8,379.64
  4. Step 4: Simplify right side
    15,453.21x = 178,699,448.17
  5. Step 5: Solve for x
    x = 178,699,448.17/15,453.21
  6. Step 6: Final answer
    x = 11,563.90

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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.