Home / 20,617.25-30,930.08-8,771.00

Finding the Fourth Proportional to 20,617.25, 30,930.08 and 8,771.00

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Solution

The fourth proportional to 20,617.25, 30,930.08 and 8,771.00 is: 13,158.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,617.25 : 30,930.08 = 8,771.00 : x
  2. Step 2: Convert to fraction form
    20,617.25/30,930.08 = 8,771.00/x
  3. Step 3: Cross multiply
    20,617.25x = 30,930.08 × 8,771.00
  4. Step 4: Simplify right side
    20,617.25x = 271,287,533.17
  5. Step 5: Solve for x
    x = 271,287,533.17/20,617.25
  6. Step 6: Final answer
    x = 13,158.28

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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.