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Finding the Fourth Proportional to 25,986.30, 38,906.55 and 25,257.30

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Solution

The fourth proportional to 25,986.30, 38,906.55 and 25,257.30 is: 37,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,986.30 : 38,906.55 = 25,257.30 : x
  2. Step 2: Convert to fraction form
    25,986.30/38,906.55 = 25,257.30/x
  3. Step 3: Cross multiply
    25,986.30x = 38,906.55 × 25,257.30
  4. Step 4: Simplify right side
    25,986.30x = 982,674,405.32
  5. Step 5: Solve for x
    x = 982,674,405.32/25,986.30
  6. Step 6: Final answer
    x = 37,815.10

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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.