Home / 12,980.06-17,874.76-11,277.78

Finding the Fourth Proportional to 12,980.06, 17,874.76 and 11,277.78

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Solution

The fourth proportional to 12,980.06, 17,874.76 and 11,277.78 is: 15,530.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,980.06 : 17,874.76 = 11,277.78 : x
  2. Step 2: Convert to fraction form
    12,980.06/17,874.76 = 11,277.78/x
  3. Step 3: Cross multiply
    12,980.06x = 17,874.76 × 11,277.78
  4. Step 4: Simplify right side
    12,980.06x = 201,587,610.83
  5. Step 5: Solve for x
    x = 201,587,610.83/12,980.06
  6. Step 6: Final answer
    x = 15,530.56

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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.