Home / 20,984.28-28,958.88-11,553.42

Finding the Fourth Proportional to 20,984.28, 28,958.88 and 11,553.42

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Solution

The fourth proportional to 20,984.28, 28,958.88 and 11,553.42 is: 15,944.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.28 : 28,958.88 = 11,553.42 : x
  2. Step 2: Convert to fraction form
    20,984.28/28,958.88 = 11,553.42/x
  3. Step 3: Cross multiply
    20,984.28x = 28,958.88 × 11,553.42
  4. Step 4: Simplify right side
    20,984.28x = 334,574,103.37
  5. Step 5: Solve for x
    x = 334,574,103.37/20,984.28
  6. Step 6: Final answer
    x = 15,944.04

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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.