Home / 12,399.56-18,631.54-11,589.67

Finding the Fourth Proportional to 12,399.56, 18,631.54 and 11,589.67

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Solution

The fourth proportional to 12,399.56, 18,631.54 and 11,589.67 is: 17,414.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,399.56 : 18,631.54 = 11,589.67 : x
  2. Step 2: Convert to fraction form
    12,399.56/18,631.54 = 11,589.67/x
  3. Step 3: Cross multiply
    12,399.56x = 18,631.54 × 11,589.67
  4. Step 4: Simplify right side
    12,399.56x = 215,933,400.19
  5. Step 5: Solve for x
    x = 215,933,400.19/12,399.56
  6. Step 6: Final answer
    x = 17,414.60

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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.