Home / 15,453.14-21,325.34-8,379.56

Finding the Fourth Proportional to 15,453.14, 21,325.34 and 8,379.56

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Solution

The fourth proportional to 15,453.14, 21,325.34 and 8,379.56 is: 11,563.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,453.14 : 21,325.34 = 8,379.56 : x
  2. Step 2: Convert to fraction form
    15,453.14/21,325.34 = 8,379.56/x
  3. Step 3: Cross multiply
    15,453.14x = 21,325.34 × 8,379.56
  4. Step 4: Simplify right side
    15,453.14x = 178,696,880.37
  5. Step 5: Solve for x
    x = 178,696,880.37/15,453.14
  6. Step 6: Final answer
    x = 11,563.79

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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.