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Finding the Fourth Proportional to 13,314.66, 19,957.41 and 6,731.79

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Solution

The fourth proportional to 13,314.66, 19,957.41 and 6,731.79 is: 10,090.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,314.66 : 19,957.41 = 6,731.79 : x
  2. Step 2: Convert to fraction form
    13,314.66/19,957.41 = 6,731.79/x
  3. Step 3: Cross multiply
    13,314.66x = 19,957.41 × 6,731.79
  4. Step 4: Simplify right side
    13,314.66x = 134,349,093.06
  5. Step 5: Solve for x
    x = 134,349,093.06/13,314.66
  6. Step 6: Final answer
    x = 10,090.31

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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.