Home / 13,989.60-20,932.56-7,837.92

Finding the Fourth Proportional to 13,989.60, 20,932.56 and 7,837.92

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Solution

The fourth proportional to 13,989.60, 20,932.56 and 7,837.92 is: 11,727.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.60 : 20,932.56 = 7,837.92 : x
  2. Step 2: Convert to fraction form
    13,989.60/20,932.56 = 7,837.92/x
  3. Step 3: Cross multiply
    13,989.60x = 20,932.56 × 7,837.92
  4. Step 4: Simplify right side
    13,989.60x = 164,067,730.68
  5. Step 5: Solve for x
    x = 164,067,730.68/13,989.60
  6. Step 6: Final answer
    x = 11,727.84

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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.