Home / 11,028.78-15,218.79-6,490.73

Finding the Fourth Proportional to 11,028.78, 15,218.79 and 6,490.73

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Solution

The fourth proportional to 11,028.78, 15,218.79 and 6,490.73 is: 8,956.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,028.78 : 15,218.79 = 6,490.73 : x
  2. Step 2: Convert to fraction form
    11,028.78/15,218.79 = 6,490.73/x
  3. Step 3: Cross multiply
    11,028.78x = 15,218.79 × 6,490.73
  4. Step 4: Simplify right side
    11,028.78x = 98,780,980.72
  5. Step 5: Solve for x
    x = 98,780,980.72/11,028.78
  6. Step 6: Final answer
    x = 8,956.66

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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.