Home / 18,941.96-28,406.78-8,945.15

Finding the Fourth Proportional to 18,941.96, 28,406.78 and 8,945.15

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Solution

The fourth proportional to 18,941.96, 28,406.78 and 8,945.15 is: 13,414.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,941.96 : 28,406.78 = 8,945.15 : x
  2. Step 2: Convert to fraction form
    18,941.96/28,406.78 = 8,945.15/x
  3. Step 3: Cross multiply
    18,941.96x = 28,406.78 × 8,945.15
  4. Step 4: Simplify right side
    18,941.96x = 254,102,934.41
  5. Step 5: Solve for x
    x = 254,102,934.41/18,941.96
  6. Step 6: Final answer
    x = 13,414.82

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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.