Home / 13,724.58-18,939.78-7,756.26

Finding the Fourth Proportional to 13,724.58, 18,939.78 and 7,756.26

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Solution

The fourth proportional to 13,724.58, 18,939.78 and 7,756.26 is: 10,703.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.58 : 18,939.78 = 7,756.26 : x
  2. Step 2: Convert to fraction form
    13,724.58/18,939.78 = 7,756.26/x
  3. Step 3: Cross multiply
    13,724.58x = 18,939.78 × 7,756.26
  4. Step 4: Simplify right side
    13,724.58x = 146,901,858.02
  5. Step 5: Solve for x
    x = 146,901,858.02/13,724.58
  6. Step 6: Final answer
    x = 10,703.56

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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.