Home / 21,979.08-30,329.46-12,546.36

Finding the Fourth Proportional to 21,979.08, 30,329.46 and 12,546.36

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Solution

The fourth proportional to 21,979.08, 30,329.46 and 12,546.36 is: 17,313.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,979.08 : 30,329.46 = 12,546.36 : x
  2. Step 2: Convert to fraction form
    21,979.08/30,329.46 = 12,546.36/x
  3. Step 3: Cross multiply
    21,979.08x = 30,329.46 × 12,546.36
  4. Step 4: Simplify right side
    21,979.08x = 380,524,323.77
  5. Step 5: Solve for x
    x = 380,524,323.77/21,979.08
  6. Step 6: Final answer
    x = 17,313.02

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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.