Home / 20,955.48-28,917.60-11,524.02

Finding the Fourth Proportional to 20,955.48, 28,917.60 and 11,524.02

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Solution

The fourth proportional to 20,955.48, 28,917.60 and 11,524.02 is: 15,902.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,955.48 : 28,917.60 = 11,524.02 : x
  2. Step 2: Convert to fraction form
    20,955.48/28,917.60 = 11,524.02/x
  3. Step 3: Cross multiply
    20,955.48x = 28,917.60 × 11,524.02
  4. Step 4: Simplify right side
    20,955.48x = 333,247,000.75
  5. Step 5: Solve for x
    x = 333,247,000.75/20,955.48
  6. Step 6: Final answer
    x = 15,902.62

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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.