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Finding the Fourth Proportional to 12,795.73, 17,658.65 and 7,130.48

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Solution

The fourth proportional to 12,795.73, 17,658.65 and 7,130.48 is: 9,840.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,795.73 : 17,658.65 = 7,130.48 : x
  2. Step 2: Convert to fraction form
    12,795.73/17,658.65 = 7,130.48/x
  3. Step 3: Cross multiply
    12,795.73x = 17,658.65 × 7,130.48
  4. Step 4: Simplify right side
    12,795.73x = 125,914,712.62
  5. Step 5: Solve for x
    x = 125,914,712.62/12,795.73
  6. Step 6: Final answer
    x = 9,840.37

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1.5x scale

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.