Home / 11,137.72-15,368.94-6,660.58

Finding the Fourth Proportional to 11,137.72, 15,368.94 and 6,660.58

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Solution

The fourth proportional to 11,137.72, 15,368.94 and 6,660.58 is: 9,190.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,137.72 : 15,368.94 = 6,660.58 : x
  2. Step 2: Convert to fraction form
    11,137.72/15,368.94 = 6,660.58/x
  3. Step 3: Cross multiply
    11,137.72x = 15,368.94 × 6,660.58
  4. Step 4: Simplify right side
    11,137.72x = 102,366,054.39
  5. Step 5: Solve for x
    x = 102,366,054.39/11,137.72
  6. Step 6: Final answer
    x = 9,190.93

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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.