Home / 15,979.94-22,053.87-11,939.75

Finding the Fourth Proportional to 15,979.94, 22,053.87 and 11,939.75

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Solution

The fourth proportional to 15,979.94, 22,053.87 and 11,939.75 is: 16,478.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.94 : 22,053.87 = 11,939.75 : x
  2. Step 2: Convert to fraction form
    15,979.94/22,053.87 = 11,939.75/x
  3. Step 3: Cross multiply
    15,979.94x = 22,053.87 × 11,939.75
  4. Step 4: Simplify right side
    15,979.94x = 263,317,749.47
  5. Step 5: Solve for x
    x = 263,317,749.47/15,979.94
  6. Step 6: Final answer
    x = 16,478.02

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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.