Home / 20,783.33-31,146.26-18,003.11

Finding the Fourth Proportional to 20,783.33, 31,146.26 and 18,003.11

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Solution

The fourth proportional to 20,783.33, 31,146.26 and 18,003.11 is: 26,979.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,783.33 : 31,146.26 = 18,003.11 : x
  2. Step 2: Convert to fraction form
    20,783.33/31,146.26 = 18,003.11/x
  3. Step 3: Cross multiply
    20,783.33x = 31,146.26 × 18,003.11
  4. Step 4: Simplify right side
    20,783.33x = 560,729,299.12
  5. Step 5: Solve for x
    x = 560,729,299.12/20,783.33
  6. Step 6: Final answer
    x = 26,979.77

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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.