Home / 20,513.43-30,825.72-11,160.36

Finding the Fourth Proportional to 20,513.43, 30,825.72 and 11,160.36

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Solution

The fourth proportional to 20,513.43, 30,825.72 and 11,160.36 is: 16,770.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.43 : 30,825.72 = 11,160.36 : x
  2. Step 2: Convert to fraction form
    20,513.43/30,825.72 = 11,160.36/x
  3. Step 3: Cross multiply
    20,513.43x = 30,825.72 × 11,160.36
  4. Step 4: Simplify right side
    20,513.43x = 344,026,132.46
  5. Step 5: Solve for x
    x = 344,026,132.46/20,513.43
  6. Step 6: Final answer
    x = 16,770.78

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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.