Home / 12,788.72-19,085.85-11,942.75

Finding the Fourth Proportional to 12,788.72, 19,085.85 and 11,942.75

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Solution

The fourth proportional to 12,788.72, 19,085.85 and 11,942.75 is: 17,823.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,788.72 : 19,085.85 = 11,942.75 : x
  2. Step 2: Convert to fraction form
    12,788.72/19,085.85 = 11,942.75/x
  3. Step 3: Cross multiply
    12,788.72x = 19,085.85 × 11,942.75
  4. Step 4: Simplify right side
    12,788.72x = 227,937,439.66
  5. Step 5: Solve for x
    x = 227,937,439.66/12,788.72
  6. Step 6: Final answer
    x = 17,823.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.