Home / 20,516.28-30,752.94-11,620.50

Finding the Fourth Proportional to 20,516.28, 30,752.94 and 11,620.50

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Solution

The fourth proportional to 20,516.28, 30,752.94 and 11,620.50 is: 17,418.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,516.28 : 30,752.94 = 11,620.50 : x
  2. Step 2: Convert to fraction form
    20,516.28/30,752.94 = 11,620.50/x
  3. Step 3: Cross multiply
    20,516.28x = 30,752.94 × 11,620.50
  4. Step 4: Simplify right side
    20,516.28x = 357,364,539.27
  5. Step 5: Solve for x
    x = 357,364,539.27/20,516.28
  6. Step 6: Final answer
    x = 17,418.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.