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Finding the Fourth Proportional to 12,790.00, 17,650.73 and 7,124.74

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Solution

The fourth proportional to 12,790.00, 17,650.73 and 7,124.74 is: 9,832.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,790.00 : 17,650.73 = 7,124.74 : x
  2. Step 2: Convert to fraction form
    12,790.00/17,650.73 = 7,124.74/x
  3. Step 3: Cross multiply
    12,790.00x = 17,650.73 × 7,124.74
  4. Step 4: Simplify right side
    12,790.00x = 125,756,928.60
  5. Step 5: Solve for x
    x = 125,756,928.60/12,790.00
  6. Step 6: Final answer
    x = 9,832.44

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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.