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Finding the Fourth Proportional to 16,919.20, 25,347.18 and 14,163.58

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Solution

The fourth proportional to 16,919.20, 25,347.18 and 14,163.58 is: 21,218.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,919.20 : 25,347.18 = 14,163.58 : x
  2. Step 2: Convert to fraction form
    16,919.20/25,347.18 = 14,163.58/x
  3. Step 3: Cross multiply
    16,919.20x = 25,347.18 × 14,163.58
  4. Step 4: Simplify right side
    16,919.20x = 359,006,811.70
  5. Step 5: Solve for x
    x = 359,006,811.70/16,919.20
  6. Step 6: Final answer
    x = 21,218.90

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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.