Home / 20,245.67-27,939.07-11,293.75

Finding the Fourth Proportional to 20,245.67, 27,939.07 and 11,293.75

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Solution

The fourth proportional to 20,245.67, 27,939.07 and 11,293.75 is: 15,585.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,245.67 : 27,939.07 = 11,293.75 : x
  2. Step 2: Convert to fraction form
    20,245.67/27,939.07 = 11,293.75/x
  3. Step 3: Cross multiply
    20,245.67x = 27,939.07 × 11,293.75
  4. Step 4: Simplify right side
    20,245.67x = 315,536,871.81
  5. Step 5: Solve for x
    x = 315,536,871.81/20,245.67
  6. Step 6: Final answer
    x = 15,585.40

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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.