Home / 12,118.85-16,725.51-6,813.66

Finding the Fourth Proportional to 12,118.85, 16,725.51 and 6,813.66

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Solution

The fourth proportional to 12,118.85, 16,725.51 and 6,813.66 is: 9,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,118.85 : 16,725.51 = 6,813.66 : x
  2. Step 2: Convert to fraction form
    12,118.85/16,725.51 = 6,813.66/x
  3. Step 3: Cross multiply
    12,118.85x = 16,725.51 × 6,813.66
  4. Step 4: Simplify right side
    12,118.85x = 113,961,938.47
  5. Step 5: Solve for x
    x = 113,961,938.47/12,118.85
  6. Step 6: Final answer
    x = 9,403.70

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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.