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Finding the Fourth Proportional to 16,800, 25,138.49 and 15,898.79

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Solution

The fourth proportional to 16,800, 25,138.49 and 15,898.79 is: 23,789.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,800 : 25,138.49 = 15,898.79 : x
  2. Step 2: Convert to fraction form
    16,800/25,138.49 = 15,898.79/x
  3. Step 3: Cross multiply
    16,800x = 25,138.49 × 15,898.79
  4. Step 4: Simplify right side
    16,800x = 399,671,368.24
  5. Step 5: Solve for x
    x = 399,671,368.24/16,800
  6. Step 6: Final answer
    x = 23,789.96

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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.