Home / 20,334.53-28,063.59-12,786.50

Finding the Fourth Proportional to 20,334.53, 28,063.59 and 12,786.50

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Solution

The fourth proportional to 20,334.53, 28,063.59 and 12,786.50 is: 17,646.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,334.53 : 28,063.59 = 12,786.50 : x
  2. Step 2: Convert to fraction form
    20,334.53/28,063.59 = 12,786.50/x
  3. Step 3: Cross multiply
    20,334.53x = 28,063.59 × 12,786.50
  4. Step 4: Simplify right side
    20,334.53x = 358,835,093.54
  5. Step 5: Solve for x
    x = 358,835,093.54/20,334.53
  6. Step 6: Final answer
    x = 17,646.59

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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.