Home / 13,979.07-20,968.76-4,118.54

Finding the Fourth Proportional to 13,979.07, 20,968.76 and 4,118.54

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Solution

The fourth proportional to 13,979.07, 20,968.76 and 4,118.54 is: 6,177.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.07 : 20,968.76 = 4,118.54 : x
  2. Step 2: Convert to fraction form
    13,979.07/20,968.76 = 4,118.54/x
  3. Step 3: Cross multiply
    13,979.07x = 20,968.76 × 4,118.54
  4. Step 4: Simplify right side
    13,979.07x = 86,360,582.26
  5. Step 5: Solve for x
    x = 86,360,582.26/13,979.07
  6. Step 6: Final answer
    x = 6,177.85

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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.