Home / 12,116.45-16,725.36-8,081.81

Finding the Fourth Proportional to 12,116.45, 16,725.36 and 8,081.81

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Solution

The fourth proportional to 12,116.45, 16,725.36 and 8,081.81 is: 11,156.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,116.45 : 16,725.36 = 8,081.81 : x
  2. Step 2: Convert to fraction form
    12,116.45/16,725.36 = 8,081.81/x
  3. Step 3: Cross multiply
    12,116.45x = 16,725.36 × 8,081.81
  4. Step 4: Simplify right side
    12,116.45x = 135,171,098.07
  5. Step 5: Solve for x
    x = 135,171,098.07/12,116.45
  6. Step 6: Final answer
    x = 11,156.00

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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.