Home / 13,251.09-19,879.04-5,455.65

Finding the Fourth Proportional to 13,251.09, 19,879.04 and 5,455.65

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Solution

The fourth proportional to 13,251.09, 19,879.04 and 5,455.65 is: 8,184.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,251.09 : 19,879.04 = 5,455.65 : x
  2. Step 2: Convert to fraction form
    13,251.09/19,879.04 = 5,455.65/x
  3. Step 3: Cross multiply
    13,251.09x = 19,879.04 × 5,455.65
  4. Step 4: Simplify right side
    13,251.09x = 108,453,057.30
  5. Step 5: Solve for x
    x = 108,453,057.30/13,251.09
  6. Step 6: Final answer
    x = 8,184.46

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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.