Home / 11,321.10-16,981.65-3,923.10

Finding the Fourth Proportional to 11,321.10, 16,981.65 and 3,923.10

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Solution

The fourth proportional to 11,321.10, 16,981.65 and 3,923.10 is: 5,884.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,321.10 : 16,981.65 = 3,923.10 : x
  2. Step 2: Convert to fraction form
    11,321.10/16,981.65 = 3,923.10/x
  3. Step 3: Cross multiply
    11,321.10x = 16,981.65 × 3,923.10
  4. Step 4: Simplify right side
    11,321.10x = 66,620,711.12
  5. Step 5: Solve for x
    x = 66,620,711.12/11,321.10
  6. Step 6: Final answer
    x = 5,884.65

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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.