Home / 12,155.68-16,774.58-6,778.64

Finding the Fourth Proportional to 12,155.68, 16,774.58 and 6,778.64

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Solution

The fourth proportional to 12,155.68, 16,774.58 and 6,778.64 is: 9,354.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,155.68 : 16,774.58 = 6,778.64 : x
  2. Step 2: Convert to fraction form
    12,155.68/16,774.58 = 6,778.64/x
  3. Step 3: Cross multiply
    12,155.68x = 16,774.58 × 6,778.64
  4. Step 4: Simplify right side
    12,155.68x = 113,708,838.97
  5. Step 5: Solve for x
    x = 113,708,838.97/12,155.68
  6. Step 6: Final answer
    x = 9,354.38

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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.