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Finding the Fourth Proportional to 13,804.58, 20,709.93 and 5,039.47

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Solution

The fourth proportional to 13,804.58, 20,709.93 and 5,039.47 is: 7,560.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,804.58 : 20,709.93 = 5,039.47 : x
  2. Step 2: Convert to fraction form
    13,804.58/20,709.93 = 5,039.47/x
  3. Step 3: Cross multiply
    13,804.58x = 20,709.93 × 5,039.47
  4. Step 4: Simplify right side
    13,804.58x = 104,367,070.94
  5. Step 5: Solve for x
    x = 104,367,070.94/13,804.58
  6. Step 6: Final answer
    x = 7,560.32

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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.