Home / 20,783.25-31,188.56-9,096.48

Finding the Fourth Proportional to 20,783.25, 31,188.56 and 9,096.48

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Solution

The fourth proportional to 20,783.25, 31,188.56 and 9,096.48 is: 13,650.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.25 : 31,188.56 = 9,096.48 : x
  2. Step 2: Convert to fraction form
    20,783.25/31,188.56 = 9,096.48/x
  3. Step 3: Cross multiply
    20,783.25x = 31,188.56 × 9,096.48
  4. Step 4: Simplify right side
    20,783.25x = 283,706,066.79
  5. Step 5: Solve for x
    x = 283,706,066.79/20,783.25
  6. Step 6: Final answer
    x = 13,650.71

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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.