Home / 20,314.09-30,383.65-18,078.49

Finding the Fourth Proportional to 20,314.09, 30,383.65 and 18,078.49

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Solution

The fourth proportional to 20,314.09, 30,383.65 and 18,078.49 is: 27,039.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,314.09 : 30,383.65 = 18,078.49 : x
  2. Step 2: Convert to fraction form
    20,314.09/30,383.65 = 18,078.49/x
  3. Step 3: Cross multiply
    20,314.09x = 30,383.65 × 18,078.49
  4. Step 4: Simplify right side
    20,314.09x = 549,290,512.69
  5. Step 5: Solve for x
    x = 549,290,512.69/20,314.09
  6. Step 6: Final answer
    x = 27,039.88

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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.