Home / 13,809.36-20,709.48-5,491.44

Finding the Fourth Proportional to 13,809.36, 20,709.48 and 5,491.44

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Solution

The fourth proportional to 13,809.36, 20,709.48 and 5,491.44 is: 8,235.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,809.36 : 20,709.48 = 5,491.44 : x
  2. Step 2: Convert to fraction form
    13,809.36/20,709.48 = 5,491.44/x
  3. Step 3: Cross multiply
    13,809.36x = 20,709.48 × 5,491.44
  4. Step 4: Simplify right side
    13,809.36x = 113,724,866.85
  5. Step 5: Solve for x
    x = 113,724,866.85/13,809.36
  6. Step 6: Final answer
    x = 8,235.35

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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.