Home / 12,078.17-16,660.21-8,725.91

Finding the Fourth Proportional to 12,078.17, 16,660.21 and 8,725.91

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Solution

The fourth proportional to 12,078.17, 16,660.21 and 8,725.91 is: 12,036.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,078.17 : 16,660.21 = 8,725.91 : x
  2. Step 2: Convert to fraction form
    12,078.17/16,660.21 = 8,725.91/x
  3. Step 3: Cross multiply
    12,078.17x = 16,660.21 × 8,725.91
  4. Step 4: Simplify right side
    12,078.17x = 145,375,493.04
  5. Step 5: Solve for x
    x = 145,375,493.04/12,078.17
  6. Step 6: Final answer
    x = 12,036.22

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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.