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Finding the Fourth Proportional to 18,851.87, 28,281.87 and 5,525.96

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Solution

The fourth proportional to 18,851.87, 28,281.87 and 5,525.96 is: 8,290.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,851.87 : 28,281.87 = 5,525.96 : x
  2. Step 2: Convert to fraction form
    18,851.87/28,281.87 = 5,525.96/x
  3. Step 3: Cross multiply
    18,851.87x = 28,281.87 × 5,525.96
  4. Step 4: Simplify right side
    18,851.87x = 156,284,340.94
  5. Step 5: Solve for x
    x = 156,284,340.94/18,851.87
  6. Step 6: Final answer
    x = 8,290.12

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1.5x scale

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.