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Finding the Fourth Proportional to 11,979, 16,531.19 and 6,943.59

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Solution

The fourth proportional to 11,979, 16,531.19 and 6,943.59 is: 9,582.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979 : 16,531.19 = 6,943.59 : x
  2. Step 2: Convert to fraction form
    11,979/16,531.19 = 6,943.59/x
  3. Step 3: Cross multiply
    11,979x = 16,531.19 × 6,943.59
  4. Step 4: Simplify right side
    11,979x = 114,785,805.57
  5. Step 5: Solve for x
    x = 114,785,805.57/11,979
  6. Step 6: Final answer
    x = 9,582.25

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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.