Home / 18,979.07-28,485.88-10,101.85

Finding the Fourth Proportional to 18,979.07, 28,485.88 and 10,101.85

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Solution

The fourth proportional to 18,979.07, 28,485.88 and 10,101.85 is: 15,161.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.07 : 28,485.88 = 10,101.85 : x
  2. Step 2: Convert to fraction form
    18,979.07/28,485.88 = 10,101.85/x
  3. Step 3: Cross multiply
    18,979.07x = 28,485.88 × 10,101.85
  4. Step 4: Simplify right side
    18,979.07x = 287,760,110.58
  5. Step 5: Solve for x
    x = 287,760,110.58/18,979.07
  6. Step 6: Final answer
    x = 15,161.97

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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.