Home / 18,782.09-28,132.19-9,405.75

Finding the Fourth Proportional to 18,782.09, 28,132.19 and 9,405.75

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Solution

The fourth proportional to 18,782.09, 28,132.19 and 9,405.75 is: 14,088.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,782.09 : 28,132.19 = 9,405.75 : x
  2. Step 2: Convert to fraction form
    18,782.09/28,132.19 = 9,405.75/x
  3. Step 3: Cross multiply
    18,782.09x = 28,132.19 × 9,405.75
  4. Step 4: Simplify right side
    18,782.09x = 264,604,346.09
  5. Step 5: Solve for x
    x = 264,604,346.09/18,782.09
  6. Step 6: Final answer
    x = 14,088.12

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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.