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Finding the Fourth Proportional to 12,299.66, 16,972.13 and 6,921.06

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Solution

The fourth proportional to 12,299.66, 16,972.13 and 6,921.06 is: 9,550.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,299.66 : 16,972.13 = 6,921.06 : x
  2. Step 2: Convert to fraction form
    12,299.66/16,972.13 = 6,921.06/x
  3. Step 3: Cross multiply
    12,299.66x = 16,972.13 × 6,921.06
  4. Step 4: Simplify right side
    12,299.66x = 117,465,147.36
  5. Step 5: Solve for x
    x = 117,465,147.36/12,299.66
  6. Step 6: Final answer
    x = 9,550.27

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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.