Home / 20,072.07-30,115.09-8,979.93

Finding the Fourth Proportional to 20,072.07, 30,115.09 and 8,979.93

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Solution

The fourth proportional to 20,072.07, 30,115.09 and 8,979.93 is: 13,473.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,072.07 : 30,115.09 = 8,979.93 : x
  2. Step 2: Convert to fraction form
    20,072.07/30,115.09 = 8,979.93/x
  3. Step 3: Cross multiply
    20,072.07x = 30,115.09 × 8,979.93
  4. Step 4: Simplify right side
    20,072.07x = 270,431,400.14
  5. Step 5: Solve for x
    x = 270,431,400.14/20,072.07
  6. Step 6: Final answer
    x = 13,473.02

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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.