Home / 13,708.83-20,571.71-5,387.39

Finding the Fourth Proportional to 13,708.83, 20,571.71 and 5,387.39

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Solution

The fourth proportional to 13,708.83, 20,571.71 and 5,387.39 is: 8,084.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.83 : 20,571.71 = 5,387.39 : x
  2. Step 2: Convert to fraction form
    13,708.83/20,571.71 = 5,387.39/x
  3. Step 3: Cross multiply
    13,708.83x = 20,571.71 × 5,387.39
  4. Step 4: Simplify right side
    13,708.83x = 110,827,694.94
  5. Step 5: Solve for x
    x = 110,827,694.94/13,708.83
  6. Step 6: Final answer
    x = 8,084.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.