Home / 20,139.92-30,209.91-6,992.33

Finding the Fourth Proportional to 20,139.92, 30,209.91 and 6,992.33

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Solution

The fourth proportional to 20,139.92, 30,209.91 and 6,992.33 is: 10,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,139.92 : 30,209.91 = 6,992.33 : x
  2. Step 2: Convert to fraction form
    20,139.92/30,209.91 = 6,992.33/x
  3. Step 3: Cross multiply
    20,139.92x = 30,209.91 × 6,992.33
  4. Step 4: Simplify right side
    20,139.92x = 211,237,522.05
  5. Step 5: Solve for x
    x = 211,237,522.05/20,139.92
  6. Step 6: Final answer
    x = 10,488.50

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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.