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Finding the Fourth Proportional to 20,374.87, 30,555.01 and 11,021.80

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Solution

The fourth proportional to 20,374.87, 30,555.01 and 11,021.80 is: 16,528.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,374.87 : 30,555.01 = 11,021.80 : x
  2. Step 2: Convert to fraction form
    20,374.87/30,555.01 = 11,021.80/x
  3. Step 3: Cross multiply
    20,374.87x = 30,555.01 × 11,021.80
  4. Step 4: Simplify right side
    20,374.87x = 336,771,209.22
  5. Step 5: Solve for x
    x = 336,771,209.22/20,374.87
  6. Step 6: Final answer
    x = 16,528.75

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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.