Home / 20,735.69-28,615.26-11,783.20

Finding the Fourth Proportional to 20,735.69, 28,615.26 and 11,783.20

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Solution

The fourth proportional to 20,735.69, 28,615.26 and 11,783.20 is: 16,260.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,735.69 : 28,615.26 = 11,783.20 : x
  2. Step 2: Convert to fraction form
    20,735.69/28,615.26 = 11,783.20/x
  3. Step 3: Cross multiply
    20,735.69x = 28,615.26 × 11,783.20
  4. Step 4: Simplify right side
    20,735.69x = 337,179,331.63
  5. Step 5: Solve for x
    x = 337,179,331.63/20,735.69
  6. Step 6: Final answer
    x = 16,260.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.