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Finding the Fourth Proportional to 16,921.24, 25,410.90 and 10,385.80

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Solution

The fourth proportional to 16,921.24, 25,410.90 and 10,385.80 is: 15,596.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,921.24 : 25,410.90 = 10,385.80 : x
  2. Step 2: Convert to fraction form
    16,921.24/25,410.90 = 10,385.80/x
  3. Step 3: Cross multiply
    16,921.24x = 25,410.90 × 10,385.80
  4. Step 4: Simplify right side
    16,921.24x = 263,912,525.22
  5. Step 5: Solve for x
    x = 263,912,525.22/16,921.24
  6. Step 6: Final answer
    x = 15,596.52

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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.