Home / 12,999.75-17,939.66-7,335.70

Finding the Fourth Proportional to 12,999.75, 17,939.66 and 7,335.70

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Solution

The fourth proportional to 12,999.75, 17,939.66 and 7,335.70 is: 10,123.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,999.75 : 17,939.66 = 7,335.70 : x
  2. Step 2: Convert to fraction form
    12,999.75/17,939.66 = 7,335.70/x
  3. Step 3: Cross multiply
    12,999.75x = 17,939.66 × 7,335.70
  4. Step 4: Simplify right side
    12,999.75x = 131,599,963.86
  5. Step 5: Solve for x
    x = 131,599,963.86/12,999.75
  6. Step 6: Final answer
    x = 10,123.27

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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.