Home / 12,788.72-19,181.00-9,079.73

Finding the Fourth Proportional to 12,788.72, 19,181.00 and 9,079.73

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Solution

The fourth proportional to 12,788.72, 19,181.00 and 9,079.73 is: 13,618.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.72 : 19,181.00 = 9,079.73 : x
  2. Step 2: Convert to fraction form
    12,788.72/19,181.00 = 9,079.73/x
  3. Step 3: Cross multiply
    12,788.72x = 19,181.00 × 9,079.73
  4. Step 4: Simplify right side
    12,788.72x = 174,158,299.85
  5. Step 5: Solve for x
    x = 174,158,299.85/12,788.72
  6. Step 6: Final answer
    x = 13,618.12

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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.