Home / 20,246.45-27,940.08-11,171.57

Finding the Fourth Proportional to 20,246.45, 27,940.08 and 11,171.57

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Solution

The fourth proportional to 20,246.45, 27,940.08 and 11,171.57 is: 15,416.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,246.45 : 27,940.08 = 11,171.57 : x
  2. Step 2: Convert to fraction form
    20,246.45/27,940.08 = 11,171.57/x
  3. Step 3: Cross multiply
    20,246.45x = 27,940.08 × 11,171.57
  4. Step 4: Simplify right side
    20,246.45x = 312,134,419.83
  5. Step 5: Solve for x
    x = 312,134,419.83/20,246.45
  6. Step 6: Final answer
    x = 15,416.75

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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.