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Finding the Fourth Proportional to 20,585.00, 30,918.83 and 12,281.22

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Solution

The fourth proportional to 20,585.00, 30,918.83 and 12,281.22 is: 18,446.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,585.00 : 30,918.83 = 12,281.22 : x
  2. Step 2: Convert to fraction form
    20,585.00/30,918.83 = 12,281.22/x
  3. Step 3: Cross multiply
    20,585.00x = 30,918.83 × 12,281.22
  4. Step 4: Simplify right side
    20,585.00x = 379,720,891.97
  5. Step 5: Solve for x
    x = 379,720,891.97/20,585.00
  6. Step 6: Final answer
    x = 18,446.49

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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.