Home / 13,724.86-18,933.33-8,680.57

Finding the Fourth Proportional to 13,724.86, 18,933.33 and 8,680.57

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Solution

The fourth proportional to 13,724.86, 18,933.33 and 8,680.57 is: 11,974.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.86 : 18,933.33 = 8,680.57 : x
  2. Step 2: Convert to fraction form
    13,724.86/18,933.33 = 8,680.57/x
  3. Step 3: Cross multiply
    13,724.86x = 18,933.33 × 8,680.57
  4. Step 4: Simplify right side
    13,724.86x = 164,352,096.40
  5. Step 5: Solve for x
    x = 164,352,096.40/13,724.86
  6. Step 6: Final answer
    x = 11,974.77

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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.