Home / 20,765.48-28,656.35-11,334.05

Finding the Fourth Proportional to 20,765.48, 28,656.35 and 11,334.05

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Solution

The fourth proportional to 20,765.48, 28,656.35 and 11,334.05 is: 15,640.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,765.48 : 28,656.35 = 11,334.05 : x
  2. Step 2: Convert to fraction form
    20,765.48/28,656.35 = 11,334.05/x
  3. Step 3: Cross multiply
    20,765.48x = 28,656.35 × 11,334.05
  4. Step 4: Simplify right side
    20,765.48x = 324,792,388.77
  5. Step 5: Solve for x
    x = 324,792,388.77/20,765.48
  6. Step 6: Final answer
    x = 15,640.97

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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.