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Finding the Fourth Proportional to 20,000.07, 30,000.09 and 5,208.94

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Solution

The fourth proportional to 20,000.07, 30,000.09 and 5,208.94 is: 7,813.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,000.07 : 30,000.09 = 5,208.94 : x
  2. Step 2: Convert to fraction form
    20,000.07/30,000.09 = 5,208.94/x
  3. Step 3: Cross multiply
    20,000.07x = 30,000.09 × 5,208.94
  4. Step 4: Simplify right side
    20,000.07x = 156,268,668.80
  5. Step 5: Solve for x
    x = 156,268,668.80/20,000.07
  6. Step 6: Final answer
    x = 7,813.41

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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.