Home / 20,575.56-30,857.25-8,729.18

Finding the Fourth Proportional to 20,575.56, 30,857.25 and 8,729.18

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Solution

The fourth proportional to 20,575.56, 30,857.25 and 8,729.18 is: 13,091.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,575.56 : 30,857.25 = 8,729.18 : x
  2. Step 2: Convert to fraction form
    20,575.56/30,857.25 = 8,729.18/x
  3. Step 3: Cross multiply
    20,575.56x = 30,857.25 × 8,729.18
  4. Step 4: Simplify right side
    20,575.56x = 269,358,410.07
  5. Step 5: Solve for x
    x = 269,358,410.07/20,575.56
  6. Step 6: Final answer
    x = 13,091.18

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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.