Home / 13,738.11-18,958.59-7,450.49

Finding the Fourth Proportional to 13,738.11, 18,958.59 and 7,450.49

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Solution

The fourth proportional to 13,738.11, 18,958.59 and 7,450.49 is: 10,281.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,738.11 : 18,958.59 = 7,450.49 : x
  2. Step 2: Convert to fraction form
    13,738.11/18,958.59 = 7,450.49/x
  3. Step 3: Cross multiply
    13,738.11x = 18,958.59 × 7,450.49
  4. Step 4: Simplify right side
    13,738.11x = 141,250,690.42
  5. Step 5: Solve for x
    x = 141,250,690.42/13,738.11
  6. Step 6: Final answer
    x = 10,281.67

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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.