Home / 18,385.44-25,380.72-11,317.92

Finding the Fourth Proportional to 18,385.44, 25,380.72 and 11,317.92

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Solution

The fourth proportional to 18,385.44, 25,380.72 and 11,317.92 is: 15,624.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,385.44 : 25,380.72 = 11,317.92 : x
  2. Step 2: Convert to fraction form
    18,385.44/25,380.72 = 11,317.92/x
  3. Step 3: Cross multiply
    18,385.44x = 25,380.72 × 11,317.92
  4. Step 4: Simplify right side
    18,385.44x = 287,256,958.50
  5. Step 5: Solve for x
    x = 287,256,958.50/18,385.44
  6. Step 6: Final answer
    x = 15,624.15

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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.