Home / 12,825.60-19,238.08-3,940.90

Finding the Fourth Proportional to 12,825.60, 19,238.08 and 3,940.90

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Solution

The fourth proportional to 12,825.60, 19,238.08 and 3,940.90 is: 5,911.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,825.60 : 19,238.08 = 3,940.90 : x
  2. Step 2: Convert to fraction form
    12,825.60/19,238.08 = 3,940.90/x
  3. Step 3: Cross multiply
    12,825.60x = 19,238.08 × 3,940.90
  4. Step 4: Simplify right side
    12,825.60x = 75,815,349.47
  5. Step 5: Solve for x
    x = 75,815,349.47/12,825.60
  6. Step 6: Final answer
    x = 5,911.25

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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.