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Finding the Fourth Proportional to 17,284.92, 25,920.90 and 7,419.12

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Solution

The fourth proportional to 17,284.92, 25,920.90 and 7,419.12 is: 11,125.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,284.92 : 25,920.90 = 7,419.12 : x
  2. Step 2: Convert to fraction form
    17,284.92/25,920.90 = 7,419.12/x
  3. Step 3: Cross multiply
    17,284.92x = 25,920.90 × 7,419.12
  4. Step 4: Simplify right side
    17,284.92x = 192,310,267.61
  5. Step 5: Solve for x
    x = 192,310,267.61/17,284.92
  6. Step 6: Final answer
    x = 11,125.90

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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.