Home / 11,978.57-16,529.18-6,942.66

Finding the Fourth Proportional to 11,978.57, 16,529.18 and 6,942.66

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Solution

The fourth proportional to 11,978.57, 16,529.18 and 6,942.66 is: 9,580.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,978.57 : 16,529.18 = 6,942.66 : x
  2. Step 2: Convert to fraction form
    11,978.57/16,529.18 = 6,942.66/x
  3. Step 3: Cross multiply
    11,978.57x = 16,529.18 × 6,942.66
  4. Step 4: Simplify right side
    11,978.57x = 114,756,442.11
  5. Step 5: Solve for x
    x = 114,756,442.11/11,978.57
  6. Step 6: Final answer
    x = 9,580.15

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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.