Home / 20,783.73-31,157.13-7,633.02

Finding the Fourth Proportional to 20,783.73, 31,157.13 and 7,633.02

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Solution

The fourth proportional to 20,783.73, 31,157.13 and 7,633.02 is: 11,442.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.73 : 31,157.13 = 7,633.02 : x
  2. Step 2: Convert to fraction form
    20,783.73/31,157.13 = 7,633.02/x
  3. Step 3: Cross multiply
    20,783.73x = 31,157.13 × 7,633.02
  4. Step 4: Simplify right side
    20,783.73x = 237,822,996.43
  5. Step 5: Solve for x
    x = 237,822,996.43/20,783.73
  6. Step 6: Final answer
    x = 11,442.75

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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.