Home / 20,563.25-30,857.56-8,081.08

Finding the Fourth Proportional to 20,563.25, 30,857.56 and 8,081.08

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Solution

The fourth proportional to 20,563.25, 30,857.56 and 8,081.08 is: 12,126.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,563.25 : 30,857.56 = 8,081.08 : x
  2. Step 2: Convert to fraction form
    20,563.25/30,857.56 = 8,081.08/x
  3. Step 3: Cross multiply
    20,563.25x = 30,857.56 × 8,081.08
  4. Step 4: Simplify right side
    20,563.25x = 249,362,313.62
  5. Step 5: Solve for x
    x = 249,362,313.62/20,563.25
  6. Step 6: Final answer
    x = 12,126.60

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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.