Home / 31,996.20-48,015.90-20,875.80

Finding the Fourth Proportional to 31,996.20, 48,015.90 and 20,875.80

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Solution

The fourth proportional to 31,996.20, 48,015.90 and 20,875.80 is: 31,327.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,996.20 : 48,015.90 = 20,875.80 : x
  2. Step 2: Convert to fraction form
    31,996.20/48,015.90 = 20,875.80/x
  3. Step 3: Cross multiply
    31,996.20x = 48,015.90 × 20,875.80
  4. Step 4: Simplify right side
    31,996.20x = 1,002,370,325.22
  5. Step 5: Solve for x
    x = 1,002,370,325.22/31,996.20
  6. Step 6: Final answer
    x = 31,327.79

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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.