Home / 20,984.64-28,958.96-11,553.52

Finding the Fourth Proportional to 20,984.64, 28,958.96 and 11,553.52

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Solution

The fourth proportional to 20,984.64, 28,958.96 and 11,553.52 is: 15,943.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,984.64 : 28,958.96 = 11,553.52 : x
  2. Step 2: Convert to fraction form
    20,984.64/28,958.96 = 11,553.52/x
  3. Step 3: Cross multiply
    20,984.64x = 28,958.96 × 11,553.52
  4. Step 4: Simplify right side
    20,984.64x = 334,577,923.54
  5. Step 5: Solve for x
    x = 334,577,923.54/20,984.64
  6. Step 6: Final answer
    x = 15,943.94

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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.