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Finding the Fourth Proportional to 16,690, 25,035 and 4,378

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Solution

The fourth proportional to 16,690, 25,035 and 4,378 is: 6,567

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,690 : 25,035 = 4,378 : x
  2. Step 2: Convert to fraction form
    16,690/25,035 = 4,378/x
  3. Step 3: Cross multiply
    16,690x = 25,035 × 4,378
  4. Step 4: Simplify right side
    16,690x = 109,603,230
  5. Step 5: Solve for x
    x = 109,603,230/16,690
  6. Step 6: Final answer
    x = 6,567

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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.