Home / 12,195.86-16,830.62-6,890.57

Finding the Fourth Proportional to 12,195.86, 16,830.62 and 6,890.57

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Solution

The fourth proportional to 12,195.86, 16,830.62 and 6,890.57 is: 9,509.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,195.86 : 16,830.62 = 6,890.57 : x
  2. Step 2: Convert to fraction form
    12,195.86/16,830.62 = 6,890.57/x
  3. Step 3: Cross multiply
    12,195.86x = 16,830.62 × 6,890.57
  4. Step 4: Simplify right side
    12,195.86x = 115,972,498.33
  5. Step 5: Solve for x
    x = 115,972,498.33/12,195.86
  6. Step 6: Final answer
    x = 9,509.17

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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.