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Finding the Fourth Proportional to 20,367.84, 30,592.08 and 12,379.08

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Solution

The fourth proportional to 20,367.84, 30,592.08 and 12,379.08 is: 18,593.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,367.84 : 30,592.08 = 12,379.08 : x
  2. Step 2: Convert to fraction form
    20,367.84/30,592.08 = 12,379.08/x
  3. Step 3: Cross multiply
    20,367.84x = 30,592.08 × 12,379.08
  4. Step 4: Simplify right side
    20,367.84x = 378,701,805.69
  5. Step 5: Solve for x
    x = 378,701,805.69/20,367.84
  6. Step 6: Final answer
    x = 18,593.13

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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.