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Finding the Fourth Proportional to 20,596.20, 30,894.30 and 5,805.60

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Solution

The fourth proportional to 20,596.20, 30,894.30 and 5,805.60 is: 8,708.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,596.20 : 30,894.30 = 5,805.60 : x
  2. Step 2: Convert to fraction form
    20,596.20/30,894.30 = 5,805.60/x
  3. Step 3: Cross multiply
    20,596.20x = 30,894.30 × 5,805.60
  4. Step 4: Simplify right side
    20,596.20x = 179,359,948.08
  5. Step 5: Solve for x
    x = 179,359,948.08/20,596.20
  6. Step 6: Final answer
    x = 8,708.40

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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.