Home / 25,932.80-38,905.38-8,402.60

Finding the Fourth Proportional to 25,932.80, 38,905.38 and 8,402.60

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Solution

The fourth proportional to 25,932.80, 38,905.38 and 8,402.60 is: 12,605.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,932.80 : 38,905.38 = 8,402.60 : x
  2. Step 2: Convert to fraction form
    25,932.80/38,905.38 = 8,402.60/x
  3. Step 3: Cross multiply
    25,932.80x = 38,905.38 × 8,402.60
  4. Step 4: Simplify right side
    25,932.80x = 326,906,345.99
  5. Step 5: Solve for x
    x = 326,906,345.99/25,932.80
  6. Step 6: Final answer
    x = 12,605.90

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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.