Home / 12,556.54-17,327.84-7,178.92

Finding the Fourth Proportional to 12,556.54, 17,327.84 and 7,178.92

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Solution

The fourth proportional to 12,556.54, 17,327.84 and 7,178.92 is: 9,906.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,556.54 : 17,327.84 = 7,178.92 : x
  2. Step 2: Convert to fraction form
    12,556.54/17,327.84 = 7,178.92/x
  3. Step 3: Cross multiply
    12,556.54x = 17,327.84 × 7,178.92
  4. Step 4: Simplify right side
    12,556.54x = 124,395,177.13
  5. Step 5: Solve for x
    x = 124,395,177.13/12,556.54
  6. Step 6: Final answer
    x = 9,906.80

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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.