Home / 12,890.57-17,788.86-11,832.62

Finding the Fourth Proportional to 12,890.57, 17,788.86 and 11,832.62

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Solution

The fourth proportional to 12,890.57, 17,788.86 and 11,832.62 is: 16,328.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,890.57 : 17,788.86 = 11,832.62 : x
  2. Step 2: Convert to fraction form
    12,890.57/17,788.86 = 11,832.62/x
  3. Step 3: Cross multiply
    12,890.57x = 17,788.86 × 11,832.62
  4. Step 4: Simplify right side
    12,890.57x = 210,488,731.67
  5. Step 5: Solve for x
    x = 210,488,731.67/12,890.57
  6. Step 6: Final answer
    x = 16,328.90

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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.