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Finding the Fourth Proportional to 25,425.56, 38,137.80 and 8,785.08

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Solution

The fourth proportional to 25,425.56, 38,137.80 and 8,785.08 is: 13,177.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,425.56 : 38,137.80 = 8,785.08 : x
  2. Step 2: Convert to fraction form
    25,425.56/38,137.80 = 8,785.08/x
  3. Step 3: Cross multiply
    25,425.56x = 38,137.80 × 8,785.08
  4. Step 4: Simplify right side
    25,425.56x = 335,043,624.02
  5. Step 5: Solve for x
    x = 335,043,624.02/25,425.56
  6. Step 6: Final answer
    x = 13,177.43

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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.