Home / 13,338.56-18,394.92-12,278.67

Finding the Fourth Proportional to 13,338.56, 18,394.92 and 12,278.67

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Solution

The fourth proportional to 13,338.56, 18,394.92 and 12,278.67 is: 16,933.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,338.56 : 18,394.92 = 12,278.67 : x
  2. Step 2: Convert to fraction form
    13,338.56/18,394.92 = 12,278.67/x
  3. Step 3: Cross multiply
    13,338.56x = 18,394.92 × 12,278.67
  4. Step 4: Simplify right side
    13,338.56x = 225,865,152.36
  5. Step 5: Solve for x
    x = 225,865,152.36/13,338.56
  6. Step 6: Final answer
    x = 16,933.25

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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.