Home / 12,128.23-16,736.52-6,750.49

Finding the Fourth Proportional to 12,128.23, 16,736.52 and 6,750.49

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Solution

The fourth proportional to 12,128.23, 16,736.52 and 6,750.49 is: 9,315.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128.23 : 16,736.52 = 6,750.49 : x
  2. Step 2: Convert to fraction form
    12,128.23/16,736.52 = 6,750.49/x
  3. Step 3: Cross multiply
    12,128.23x = 16,736.52 × 6,750.49
  4. Step 4: Simplify right side
    12,128.23x = 112,979,725.75
  5. Step 5: Solve for x
    x = 112,979,725.75/12,128.23
  6. Step 6: Final answer
    x = 9,315.43

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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.