Home / 20,885.52-31,327.44-8,401.92

Finding the Fourth Proportional to 20,885.52, 31,327.44 and 8,401.92

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Solution

The fourth proportional to 20,885.52, 31,327.44 and 8,401.92 is: 12,602.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,885.52 : 31,327.44 = 8,401.92 : x
  2. Step 2: Convert to fraction form
    20,885.52/31,327.44 = 8,401.92/x
  3. Step 3: Cross multiply
    20,885.52x = 31,327.44 × 8,401.92
  4. Step 4: Simplify right side
    20,885.52x = 263,210,644.68
  5. Step 5: Solve for x
    x = 263,210,644.68/20,885.52
  6. Step 6: Final answer
    x = 12,602.54

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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.