Home / 18,751.23-28,131.30-9,984.33

Finding the Fourth Proportional to 18,751.23, 28,131.30 and 9,984.33

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Solution

The fourth proportional to 18,751.23, 28,131.30 and 9,984.33 is: 14,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.23 : 28,131.30 = 9,984.33 : x
  2. Step 2: Convert to fraction form
    18,751.23/28,131.30 = 9,984.33/x
  3. Step 3: Cross multiply
    18,751.23x = 28,131.30 × 9,984.33
  4. Step 4: Simplify right side
    18,751.23x = 280,872,182.53
  5. Step 5: Solve for x
    x = 280,872,182.53/18,751.23
  6. Step 6: Final answer
    x = 14,978.87

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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.