Home / 11,778.12-16,248.78-8,628.84

Finding the Fourth Proportional to 11,778.12, 16,248.78 and 8,628.84

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Solution

The fourth proportional to 11,778.12, 16,248.78 and 8,628.84 is: 11,904.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,778.12 : 16,248.78 = 8,628.84 : x
  2. Step 2: Convert to fraction form
    11,778.12/16,248.78 = 8,628.84/x
  3. Step 3: Cross multiply
    11,778.12x = 16,248.78 × 8,628.84
  4. Step 4: Simplify right side
    11,778.12x = 140,208,122.82
  5. Step 5: Solve for x
    x = 140,208,122.82/11,778.12
  6. Step 6: Final answer
    x = 11,904.12

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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.