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Finding the Fourth Proportional to 12,790.87, 19,150.87 and 6,537.41

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Solution

The fourth proportional to 12,790.87, 19,150.87 and 6,537.41 is: 9,788.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.87 : 19,150.87 = 6,537.41 : x
  2. Step 2: Convert to fraction form
    12,790.87/19,150.87 = 6,537.41/x
  3. Step 3: Cross multiply
    12,790.87x = 19,150.87 × 6,537.41
  4. Step 4: Simplify right side
    12,790.87x = 125,197,120.58
  5. Step 5: Solve for x
    x = 125,197,120.58/12,790.87
  6. Step 6: Final answer
    x = 9,788.01

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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.