Home / 20,984.50-28,958.61-11,553.94

Finding the Fourth Proportional to 20,984.50, 28,958.61 and 11,553.94

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Solution

The fourth proportional to 20,984.50, 28,958.61 and 11,553.94 is: 15,944.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.50 : 28,958.61 = 11,553.94 : x
  2. Step 2: Convert to fraction form
    20,984.50/28,958.61 = 11,553.94/x
  3. Step 3: Cross multiply
    20,984.50x = 28,958.61 × 11,553.94
  4. Step 4: Simplify right side
    20,984.50x = 334,586,042.42
  5. Step 5: Solve for x
    x = 334,586,042.42/20,984.50
  6. Step 6: Final answer
    x = 15,944.44

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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.