Home / 11,979.81-16,531.43-6,943.64

Finding the Fourth Proportional to 11,979.81, 16,531.43 and 6,943.64

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Solution

The fourth proportional to 11,979.81, 16,531.43 and 6,943.64 is: 9,581.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.81 : 16,531.43 = 6,943.64 : x
  2. Step 2: Convert to fraction form
    11,979.81/16,531.43 = 6,943.64/x
  3. Step 3: Cross multiply
    11,979.81x = 16,531.43 × 6,943.64
  4. Step 4: Simplify right side
    11,979.81x = 114,788,181.23
  5. Step 5: Solve for x
    x = 114,788,181.23/11,979.81
  6. Step 6: Final answer
    x = 9,581.80

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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.