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Finding the Fourth Proportional to 16,782.80, 25,181.40 and 8,574.80

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Solution

The fourth proportional to 16,782.80, 25,181.40 and 8,574.80 is: 12,865.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,782.80 : 25,181.40 = 8,574.80 : x
  2. Step 2: Convert to fraction form
    16,782.80/25,181.40 = 8,574.80/x
  3. Step 3: Cross multiply
    16,782.80x = 25,181.40 × 8,574.80
  4. Step 4: Simplify right side
    16,782.80x = 215,925,468.72
  5. Step 5: Solve for x
    x = 215,925,468.72/16,782.80
  6. Step 6: Final answer
    x = 12,865.88

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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.