Home / 15,178.09-20,945.94-8,464.30

Finding the Fourth Proportional to 15,178.09, 20,945.94 and 8,464.30

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Solution

The fourth proportional to 15,178.09, 20,945.94 and 8,464.30 is: 11,680.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,178.09 : 20,945.94 = 8,464.30 : x
  2. Step 2: Convert to fraction form
    15,178.09/20,945.94 = 8,464.30/x
  3. Step 3: Cross multiply
    15,178.09x = 20,945.94 × 8,464.30
  4. Step 4: Simplify right side
    15,178.09x = 177,292,719.94
  5. Step 5: Solve for x
    x = 177,292,719.94/15,178.09
  6. Step 6: Final answer
    x = 11,680.83

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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.