Home / 12,144.40-18,216.12-4,352.56

Finding the Fourth Proportional to 12,144.40, 18,216.12 and 4,352.56

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Solution

The fourth proportional to 12,144.40, 18,216.12 and 4,352.56 is: 6,528.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,144.40 : 18,216.12 = 4,352.56 : x
  2. Step 2: Convert to fraction form
    12,144.40/18,216.12 = 4,352.56/x
  3. Step 3: Cross multiply
    12,144.40x = 18,216.12 × 4,352.56
  4. Step 4: Simplify right side
    12,144.40x = 79,286,755.27
  5. Step 5: Solve for x
    x = 79,286,755.27/12,144.40
  6. Step 6: Final answer
    x = 6,528.67

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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.