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Finding the Fourth Proportional to 12,840.48, 17,718 and 7,534.08

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Solution

The fourth proportional to 12,840.48, 17,718 and 7,534.08 is: 10,395.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,840.48 : 17,718 = 7,534.08 : x
  2. Step 2: Convert to fraction form
    12,840.48/17,718 = 7,534.08/x
  3. Step 3: Cross multiply
    12,840.48x = 17,718 × 7,534.08
  4. Step 4: Simplify right side
    12,840.48x = 133,488,829.44
  5. Step 5: Solve for x
    x = 133,488,829.44/12,840.48
  6. Step 6: Final answer
    x = 10,395.94

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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.