Home / 11,979.45-16,411.92-11,530.53

Finding the Fourth Proportional to 11,979.45, 16,411.92 and 11,530.53

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Solution

The fourth proportional to 11,979.45, 16,411.92 and 11,530.53 is: 15,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,979.45 : 16,411.92 = 11,530.53 : x
  2. Step 2: Convert to fraction form
    11,979.45/16,411.92 = 11,530.53/x
  3. Step 3: Cross multiply
    11,979.45x = 16,411.92 × 11,530.53
  4. Step 4: Simplify right side
    11,979.45x = 189,238,135.92
  5. Step 5: Solve for x
    x = 189,238,135.92/11,979.45
  6. Step 6: Final answer
    x = 15,796.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.