Home / 20,490.63-30,755.97-10,503.33

Finding the Fourth Proportional to 20,490.63, 30,755.97 and 10,503.33

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Solution

The fourth proportional to 20,490.63, 30,755.97 and 10,503.33 is: 15,765.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,490.63 : 30,755.97 = 10,503.33 : x
  2. Step 2: Convert to fraction form
    20,490.63/30,755.97 = 10,503.33/x
  3. Step 3: Cross multiply
    20,490.63x = 30,755.97 × 10,503.33
  4. Step 4: Simplify right side
    20,490.63x = 323,040,102.38
  5. Step 5: Solve for x
    x = 323,040,102.38/20,490.63
  6. Step 6: Final answer
    x = 15,765.26

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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.