Home / 19,811.48-29,722.17-13,979.48

Finding the Fourth Proportional to 19,811.48, 29,722.17 and 13,979.48

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Solution

The fourth proportional to 19,811.48, 29,722.17 and 13,979.48 is: 20,972.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,811.48 : 29,722.17 = 13,979.48 : x
  2. Step 2: Convert to fraction form
    19,811.48/29,722.17 = 13,979.48/x
  3. Step 3: Cross multiply
    19,811.48x = 29,722.17 × 13,979.48
  4. Step 4: Simplify right side
    19,811.48x = 415,500,481.07
  5. Step 5: Solve for x
    x = 415,500,481.07/19,811.48
  6. Step 6: Final answer
    x = 20,972.71

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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.