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Finding the Fourth Proportional to 12,275.00, 16,939.61 and 6,969.92

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Solution

The fourth proportional to 12,275.00, 16,939.61 and 6,969.92 is: 9,618.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,275.00 : 16,939.61 = 6,969.92 : x
  2. Step 2: Convert to fraction form
    12,275.00/16,939.61 = 6,969.92/x
  3. Step 3: Cross multiply
    12,275.00x = 16,939.61 × 6,969.92
  4. Step 4: Simplify right side
    12,275.00x = 118,067,734.03
  5. Step 5: Solve for x
    x = 118,067,734.03/12,275.00
  6. Step 6: Final answer
    x = 9,618.56

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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.