Home / 13,724.67-18,940.41-7,756.20

Finding the Fourth Proportional to 13,724.67, 18,940.41 and 7,756.20

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Solution

The fourth proportional to 13,724.67, 18,940.41 and 7,756.20 is: 10,703.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.67 : 18,940.41 = 7,756.20 : x
  2. Step 2: Convert to fraction form
    13,724.67/18,940.41 = 7,756.20/x
  3. Step 3: Cross multiply
    13,724.67x = 18,940.41 × 7,756.20
  4. Step 4: Simplify right side
    13,724.67x = 146,905,608.04
  5. Step 5: Solve for x
    x = 146,905,608.04/13,724.67
  6. Step 6: Final answer
    x = 10,703.76

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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.