Home / 20,955.47-28,917.79-11,523.96

Finding the Fourth Proportional to 20,955.47, 28,917.79 and 11,523.96

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Solution

The fourth proportional to 20,955.47, 28,917.79 and 11,523.96 is: 15,902.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.47 : 28,917.79 = 11,523.96 : x
  2. Step 2: Convert to fraction form
    20,955.47/28,917.79 = 11,523.96/x
  3. Step 3: Cross multiply
    20,955.47x = 28,917.79 × 11,523.96
  4. Step 4: Simplify right side
    20,955.47x = 333,247,426.44
  5. Step 5: Solve for x
    x = 333,247,426.44/20,955.47
  6. Step 6: Final answer
    x = 15,902.65

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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.