Home / 20,078.55-27,707.66-11,581.03

Finding the Fourth Proportional to 20,078.55, 27,707.66 and 11,581.03

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Solution

The fourth proportional to 20,078.55, 27,707.66 and 11,581.03 is: 15,981.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,078.55 : 27,707.66 = 11,581.03 : x
  2. Step 2: Convert to fraction form
    20,078.55/27,707.66 = 11,581.03/x
  3. Step 3: Cross multiply
    20,078.55x = 27,707.66 × 11,581.03
  4. Step 4: Simplify right side
    20,078.55x = 320,883,241.69
  5. Step 5: Solve for x
    x = 320,883,241.69/20,078.55
  6. Step 6: Final answer
    x = 15,981.40

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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.