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Finding the Fourth Proportional to 12,280.84, 16,955.30 and 8,703.38

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Solution

The fourth proportional to 12,280.84, 16,955.30 and 8,703.38 is: 12,016.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280.84 : 16,955.30 = 8,703.38 : x
  2. Step 2: Convert to fraction form
    12,280.84/16,955.30 = 8,703.38/x
  3. Step 3: Cross multiply
    12,280.84x = 16,955.30 × 8,703.38
  4. Step 4: Simplify right side
    12,280.84x = 147,568,375.40
  5. Step 5: Solve for x
    x = 147,568,375.40/12,280.84
  6. Step 6: Final answer
    x = 12,016.15

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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.