Home / 12,788.16-19,174.95-6,857.75

Finding the Fourth Proportional to 12,788.16, 19,174.95 and 6,857.75

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Solution

The fourth proportional to 12,788.16, 19,174.95 and 6,857.75 is: 10,282.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.16 : 19,174.95 = 6,857.75 : x
  2. Step 2: Convert to fraction form
    12,788.16/19,174.95 = 6,857.75/x
  3. Step 3: Cross multiply
    12,788.16x = 19,174.95 × 6,857.75
  4. Step 4: Simplify right side
    12,788.16x = 131,496,917.49
  5. Step 5: Solve for x
    x = 131,496,917.49/12,788.16
  6. Step 6: Final answer
    x = 10,282.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.