Home / 12,128.82-16,737.60-6,823.64

Finding the Fourth Proportional to 12,128.82, 16,737.60 and 6,823.64

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Solution

The fourth proportional to 12,128.82, 16,737.60 and 6,823.64 is: 9,416.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.82 : 16,737.60 = 6,823.64 : x
  2. Step 2: Convert to fraction form
    12,128.82/16,737.60 = 6,823.64/x
  3. Step 3: Cross multiply
    12,128.82x = 16,737.60 × 6,823.64
  4. Step 4: Simplify right side
    12,128.82x = 114,211,315.02
  5. Step 5: Solve for x
    x = 114,211,315.02/12,128.82
  6. Step 6: Final answer
    x = 9,416.53

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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.