Home / 19,479.36-26,879.54-11,520.03

Finding the Fourth Proportional to 19,479.36, 26,879.54 and 11,520.03

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Solution

The fourth proportional to 19,479.36, 26,879.54 and 11,520.03 is: 15,896.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,479.36 : 26,879.54 = 11,520.03 : x
  2. Step 2: Convert to fraction form
    19,479.36/26,879.54 = 11,520.03/x
  3. Step 3: Cross multiply
    19,479.36x = 26,879.54 × 11,520.03
  4. Step 4: Simplify right side
    19,479.36x = 309,653,049.59
  5. Step 5: Solve for x
    x = 309,653,049.59/19,479.36
  6. Step 6: Final answer
    x = 15,896.47

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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.