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Finding the Fourth Proportional to 11,941.31, 16,479.99 and 7,701.20

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Solution

The fourth proportional to 11,941.31, 16,479.99 and 7,701.20 is: 10,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,941.31 : 16,479.99 = 7,701.20 : x
  2. Step 2: Convert to fraction form
    11,941.31/16,479.99 = 7,701.20/x
  3. Step 3: Cross multiply
    11,941.31x = 16,479.99 × 7,701.20
  4. Step 4: Simplify right side
    11,941.31x = 126,915,616.59
  5. Step 5: Solve for x
    x = 126,915,616.59/11,941.31
  6. Step 6: Final answer
    x = 10,628.29

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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.