Home / 12,212.30-16,853.58-7,176.80

Finding the Fourth Proportional to 12,212.30, 16,853.58 and 7,176.80

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Solution

The fourth proportional to 12,212.30, 16,853.58 and 7,176.80 is: 9,904.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,212.30 : 16,853.58 = 7,176.80 : x
  2. Step 2: Convert to fraction form
    12,212.30/16,853.58 = 7,176.80/x
  3. Step 3: Cross multiply
    12,212.30x = 16,853.58 × 7,176.80
  4. Step 4: Simplify right side
    12,212.30x = 120,954,772.94
  5. Step 5: Solve for x
    x = 120,954,772.94/12,212.30
  6. Step 6: Final answer
    x = 9,904.34

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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.