Home / 12,200.25-18,285.38-6,939.64

Finding the Fourth Proportional to 12,200.25, 18,285.38 and 6,939.64

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Solution

The fourth proportional to 12,200.25, 18,285.38 and 6,939.64 is: 10,400.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,200.25 : 18,285.38 = 6,939.64 : x
  2. Step 2: Convert to fraction form
    12,200.25/18,285.38 = 6,939.64/x
  3. Step 3: Cross multiply
    12,200.25x = 18,285.38 × 6,939.64
  4. Step 4: Simplify right side
    12,200.25x = 126,893,828.34
  5. Step 5: Solve for x
    x = 126,893,828.34/12,200.25
  6. Step 6: Final answer
    x = 10,400.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.