Home / 20,932.60-31,399.92-8,451.07

Finding the Fourth Proportional to 20,932.60, 31,399.92 and 8,451.07

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Solution

The fourth proportional to 20,932.60, 31,399.92 and 8,451.07 is: 12,677.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,932.60 : 31,399.92 = 8,451.07 : x
  2. Step 2: Convert to fraction form
    20,932.60/31,399.92 = 8,451.07/x
  3. Step 3: Cross multiply
    20,932.60x = 31,399.92 × 8,451.07
  4. Step 4: Simplify right side
    20,932.60x = 265,362,843.41
  5. Step 5: Solve for x
    x = 265,362,843.41/20,932.60
  6. Step 6: Final answer
    x = 12,677.01

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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.