Home / 20,955.33-28,917.93-11,523.90

Finding the Fourth Proportional to 20,955.33, 28,917.93 and 11,523.90

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Solution

The fourth proportional to 20,955.33, 28,917.93 and 11,523.90 is: 15,902.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.33 : 28,917.93 = 11,523.90 : x
  2. Step 2: Convert to fraction form
    20,955.33/28,917.93 = 11,523.90/x
  3. Step 3: Cross multiply
    20,955.33x = 28,917.93 × 11,523.90
  4. Step 4: Simplify right side
    20,955.33x = 333,247,333.53
  5. Step 5: Solve for x
    x = 333,247,333.53/20,955.33
  6. Step 6: Final answer
    x = 15,902.75

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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.