Home / 13,979.07-19,299.33-8,676.81

Finding the Fourth Proportional to 13,979.07, 19,299.33 and 8,676.81

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Solution

The fourth proportional to 13,979.07, 19,299.33 and 8,676.81 is: 11,979.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.07 : 19,299.33 = 8,676.81 : x
  2. Step 2: Convert to fraction form
    13,979.07/19,299.33 = 8,676.81/x
  3. Step 3: Cross multiply
    13,979.07x = 19,299.33 × 8,676.81
  4. Step 4: Simplify right side
    13,979.07x = 167,456,619.54
  5. Step 5: Solve for x
    x = 167,456,619.54/13,979.07
  6. Step 6: Final answer
    x = 11,979.10

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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.