Home / 18,914.08-28,328.88-13,708

Finding the Fourth Proportional to 18,914.08, 28,328.88 and 13,708

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Solution

The fourth proportional to 18,914.08, 28,328.88 and 13,708 is: 20,531.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,914.08 : 28,328.88 = 13,708 : x
  2. Step 2: Convert to fraction form
    18,914.08/28,328.88 = 13,708/x
  3. Step 3: Cross multiply
    18,914.08x = 28,328.88 × 13,708
  4. Step 4: Simplify right side
    18,914.08x = 388,332,287.04
  5. Step 5: Solve for x
    x = 388,332,287.04/18,914.08
  6. Step 6: Final answer
    x = 20,531.39

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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.