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Finding the Fourth Proportional to 17,078.65, 25,620.71 and 7,220.75

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Solution

The fourth proportional to 17,078.65, 25,620.71 and 7,220.75 is: 10,832.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,078.65 : 25,620.71 = 7,220.75 : x
  2. Step 2: Convert to fraction form
    17,078.65/25,620.71 = 7,220.75/x
  3. Step 3: Cross multiply
    17,078.65x = 25,620.71 × 7,220.75
  4. Step 4: Simplify right side
    17,078.65x = 185,000,577.53
  5. Step 5: Solve for x
    x = 185,000,577.53/17,078.65
  6. Step 6: Final answer
    x = 10,832.27

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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.