Home / 18,979.80-28,487.12-9,626.33

Finding the Fourth Proportional to 18,979.80, 28,487.12 and 9,626.33

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Solution

The fourth proportional to 18,979.80, 28,487.12 and 9,626.33 is: 14,448.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,979.80 : 28,487.12 = 9,626.33 : x
  2. Step 2: Convert to fraction form
    18,979.80/28,487.12 = 9,626.33/x
  3. Step 3: Cross multiply
    18,979.80x = 28,487.12 × 9,626.33
  4. Step 4: Simplify right side
    18,979.80x = 274,226,227.30
  5. Step 5: Solve for x
    x = 274,226,227.30/18,979.80
  6. Step 6: Final answer
    x = 14,448.32

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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.