Home / 13,279.40-19,928.70-5,493.80

Finding the Fourth Proportional to 13,279.40, 19,928.70 and 5,493.80

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Solution

The fourth proportional to 13,279.40, 19,928.70 and 5,493.80 is: 8,244.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,279.40 : 19,928.70 = 5,493.80 : x
  2. Step 2: Convert to fraction form
    13,279.40/19,928.70 = 5,493.80/x
  3. Step 3: Cross multiply
    13,279.40x = 19,928.70 × 5,493.80
  4. Step 4: Simplify right side
    13,279.40x = 109,484,292.06
  5. Step 5: Solve for x
    x = 109,484,292.06/13,279.40
  6. Step 6: Final answer
    x = 8,244.67

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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.