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Finding the Fourth Proportional to 12,268.80, 16,931.03 and 6,963.71

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Solution

The fourth proportional to 12,268.80, 16,931.03 and 6,963.71 is: 9,609.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,268.80 : 16,931.03 = 6,963.71 : x
  2. Step 2: Convert to fraction form
    12,268.80/16,931.03 = 6,963.71/x
  3. Step 3: Cross multiply
    12,268.80x = 16,931.03 × 6,963.71
  4. Step 4: Simplify right side
    12,268.80x = 117,902,663.45
  5. Step 5: Solve for x
    x = 117,902,663.45/12,268.80
  6. Step 6: Final answer
    x = 9,609.96

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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.