Home / 20,618.14-28,452.91-11,186.50

Finding the Fourth Proportional to 20,618.14, 28,452.91 and 11,186.50

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Solution

The fourth proportional to 20,618.14, 28,452.91 and 11,186.50 is: 15,437.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,618.14 : 28,452.91 = 11,186.50 : x
  2. Step 2: Convert to fraction form
    20,618.14/28,452.91 = 11,186.50/x
  3. Step 3: Cross multiply
    20,618.14x = 28,452.91 × 11,186.50
  4. Step 4: Simplify right side
    20,618.14x = 318,288,477.72
  5. Step 5: Solve for x
    x = 318,288,477.72/20,618.14
  6. Step 6: Final answer
    x = 15,437.30

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.