Home / 15,452.94-21,325.18-8,379.42

Finding the Fourth Proportional to 15,452.94, 21,325.18 and 8,379.42

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Solution

The fourth proportional to 15,452.94, 21,325.18 and 8,379.42 is: 11,563.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,452.94 : 21,325.18 = 8,379.42 : x
  2. Step 2: Convert to fraction form
    15,452.94/21,325.18 = 8,379.42/x
  3. Step 3: Cross multiply
    15,452.94x = 21,325.18 × 8,379.42
  4. Step 4: Simplify right side
    15,452.94x = 178,692,639.80
  5. Step 5: Solve for x
    x = 178,692,639.80/15,452.94
  6. Step 6: Final answer
    x = 11,563.67

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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.