Home / 13,724.14-18,939.66-7,755.85

Finding the Fourth Proportional to 13,724.14, 18,939.66 and 7,755.85

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Solution

The fourth proportional to 13,724.14, 18,939.66 and 7,755.85 is: 10,703.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.14 : 18,939.66 = 7,755.85 : x
  2. Step 2: Convert to fraction form
    13,724.14/18,939.66 = 7,755.85/x
  3. Step 3: Cross multiply
    13,724.14x = 18,939.66 × 7,755.85
  4. Step 4: Simplify right side
    13,724.14x = 146,893,162.01
  5. Step 5: Solve for x
    x = 146,893,162.01/13,724.14
  6. Step 6: Final answer
    x = 10,703.27

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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.