Home / 21,474.76-32,160.30-12,212.68

Finding the Fourth Proportional to 21,474.76, 32,160.30 and 12,212.68

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Solution

The fourth proportional to 21,474.76, 32,160.30 and 12,212.68 is: 18,289.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,474.76 : 32,160.30 = 12,212.68 : x
  2. Step 2: Convert to fraction form
    21,474.76/32,160.30 = 12,212.68/x
  3. Step 3: Cross multiply
    21,474.76x = 32,160.30 × 12,212.68
  4. Step 4: Simplify right side
    21,474.76x = 392,763,452.60
  5. Step 5: Solve for x
    x = 392,763,452.60/21,474.76
  6. Step 6: Final answer
    x = 18,289.54

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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.