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Finding the Fourth Proportional to 17,281.86, 25,922.61 and 7,919.22

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Solution

The fourth proportional to 17,281.86, 25,922.61 and 7,919.22 is: 11,878.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,281.86 : 25,922.61 = 7,919.22 : x
  2. Step 2: Convert to fraction form
    17,281.86/25,922.61 = 7,919.22/x
  3. Step 3: Cross multiply
    17,281.86x = 25,922.61 × 7,919.22
  4. Step 4: Simplify right side
    17,281.86x = 205,286,851.56
  5. Step 5: Solve for x
    x = 205,286,851.56/17,281.86
  6. Step 6: Final answer
    x = 11,878.75

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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.