Home / 12,185.98-16,815.81-6,879.76

Finding the Fourth Proportional to 12,185.98, 16,815.81 and 6,879.76

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Solution

The fourth proportional to 12,185.98, 16,815.81 and 6,879.76 is: 9,493.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,185.98 : 16,815.81 = 6,879.76 : x
  2. Step 2: Convert to fraction form
    12,185.98/16,815.81 = 6,879.76/x
  3. Step 3: Cross multiply
    12,185.98x = 16,815.81 × 6,879.76
  4. Step 4: Simplify right side
    12,185.98x = 115,688,737.01
  5. Step 5: Solve for x
    x = 115,688,737.01/12,185.98
  6. Step 6: Final answer
    x = 9,493.59

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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.