Home / 28,110.20-42,138.30-16,251.80

Finding the Fourth Proportional to 28,110.20, 42,138.30 and 16,251.80

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Solution

The fourth proportional to 28,110.20, 42,138.30 and 16,251.80 is: 24,362.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,110.20 : 42,138.30 = 16,251.80 : x
  2. Step 2: Convert to fraction form
    28,110.20/42,138.30 = 16,251.80/x
  3. Step 3: Cross multiply
    28,110.20x = 42,138.30 × 16,251.80
  4. Step 4: Simplify right side
    28,110.20x = 684,823,223.94
  5. Step 5: Solve for x
    x = 684,823,223.94/28,110.20
  6. Step 6: Final answer
    x = 24,362.09

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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.