Home / 20,259.78-27,958.26-11,309.49

Finding the Fourth Proportional to 20,259.78, 27,958.26 and 11,309.49

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Solution

The fourth proportional to 20,259.78, 27,958.26 and 11,309.49 is: 15,606.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,259.78 : 27,958.26 = 11,309.49 : x
  2. Step 2: Convert to fraction form
    20,259.78/27,958.26 = 11,309.49/x
  3. Step 3: Cross multiply
    20,259.78x = 27,958.26 × 11,309.49
  4. Step 4: Simplify right side
    20,259.78x = 316,193,661.89
  5. Step 5: Solve for x
    x = 316,193,661.89/20,259.78
  6. Step 6: Final answer
    x = 15,606.96

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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.