Home / 11,712.26-16,135.80-8,169.32

Finding the Fourth Proportional to 11,712.26, 16,135.80 and 8,169.32

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Solution

The fourth proportional to 11,712.26, 16,135.80 and 8,169.32 is: 11,254.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,712.26 : 16,135.80 = 8,169.32 : x
  2. Step 2: Convert to fraction form
    11,712.26/16,135.80 = 8,169.32/x
  3. Step 3: Cross multiply
    11,712.26x = 16,135.80 × 8,169.32
  4. Step 4: Simplify right side
    11,712.26x = 131,818,513.66
  5. Step 5: Solve for x
    x = 131,818,513.66/11,712.26
  6. Step 6: Final answer
    x = 11,254.75

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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.