Home / 12,078.08-16,660.08-8,725.82

Finding the Fourth Proportional to 12,078.08, 16,660.08 and 8,725.82

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Solution

The fourth proportional to 12,078.08, 16,660.08 and 8,725.82 is: 12,036.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.08 : 16,660.08 = 8,725.82 : x
  2. Step 2: Convert to fraction form
    12,078.08/16,660.08 = 8,725.82/x
  3. Step 3: Cross multiply
    12,078.08x = 16,660.08 × 8,725.82
  4. Step 4: Simplify right side
    12,078.08x = 145,372,859.27
  5. Step 5: Solve for x
    x = 145,372,859.27/12,078.08
  6. Step 6: Final answer
    x = 12,036.09

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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.