Home / 12,930.43-17,850.78-8,703.73

Finding the Fourth Proportional to 12,930.43, 17,850.78 and 8,703.73

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Solution

The fourth proportional to 12,930.43, 17,850.78 and 8,703.73 is: 12,015.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,930.43 : 17,850.78 = 8,703.73 : x
  2. Step 2: Convert to fraction form
    12,930.43/17,850.78 = 8,703.73/x
  3. Step 3: Cross multiply
    12,930.43x = 17,850.78 × 8,703.73
  4. Step 4: Simplify right side
    12,930.43x = 155,368,369.41
  5. Step 5: Solve for x
    x = 155,368,369.41/12,930.43
  6. Step 6: Final answer
    x = 12,015.72

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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.