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Finding the Fourth Proportional to 20,391.99, 30,582.39 and 5,597.40

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Solution

The fourth proportional to 20,391.99, 30,582.39 and 5,597.40 is: 8,394.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,391.99 : 30,582.39 = 5,597.40 : x
  2. Step 2: Convert to fraction form
    20,391.99/30,582.39 = 5,597.40/x
  3. Step 3: Cross multiply
    20,391.99x = 30,582.39 × 5,597.40
  4. Step 4: Simplify right side
    20,391.99x = 171,181,869.79
  5. Step 5: Solve for x
    x = 171,181,869.79/20,391.99
  6. Step 6: Final answer
    x = 8,394.56

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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.