Home / 13,724.79-18,940.36-8,059.61

Finding the Fourth Proportional to 13,724.79, 18,940.36 and 8,059.61

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Solution

The fourth proportional to 13,724.79, 18,940.36 and 8,059.61 is: 11,122.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,724.79 : 18,940.36 = 8,059.61 : x
  2. Step 2: Convert to fraction form
    13,724.79/18,940.36 = 8,059.61/x
  3. Step 3: Cross multiply
    13,724.79x = 18,940.36 × 8,059.61
  4. Step 4: Simplify right side
    13,724.79x = 152,651,914.86
  5. Step 5: Solve for x
    x = 152,651,914.86/13,724.79
  6. Step 6: Final answer
    x = 11,122.35

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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.