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Finding the Fourth Proportional to 11,959.28, 16,502.64 and 6,653.60

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Solution

The fourth proportional to 11,959.28, 16,502.64 and 6,653.60 is: 9,181.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,959.28 : 16,502.64 = 6,653.60 : x
  2. Step 2: Convert to fraction form
    11,959.28/16,502.64 = 6,653.60/x
  3. Step 3: Cross multiply
    11,959.28x = 16,502.64 × 6,653.60
  4. Step 4: Simplify right side
    11,959.28x = 109,801,965.50
  5. Step 5: Solve for x
    x = 109,801,965.50/11,959.28
  6. Step 6: Final answer
    x = 9,181.32

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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.