Home / 12,118.80-16,724.76-6,813.98

Finding the Fourth Proportional to 12,118.80, 16,724.76 and 6,813.98

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Solution

The fourth proportional to 12,118.80, 16,724.76 and 6,813.98 is: 9,403.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.80 : 16,724.76 = 6,813.98 : x
  2. Step 2: Convert to fraction form
    12,118.80/16,724.76 = 6,813.98/x
  3. Step 3: Cross multiply
    12,118.80x = 16,724.76 × 6,813.98
  4. Step 4: Simplify right side
    12,118.80x = 113,962,096.52
  5. Step 5: Solve for x
    x = 113,962,096.52/12,118.80
  6. Step 6: Final answer
    x = 9,403.74

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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.