Home / 11,221.60-16,835.10-4,201.78

Finding the Fourth Proportional to 11,221.60, 16,835.10 and 4,201.78

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Solution

The fourth proportional to 11,221.60, 16,835.10 and 4,201.78 is: 6,303.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,221.60 : 16,835.10 = 4,201.78 : x
  2. Step 2: Convert to fraction form
    11,221.60/16,835.10 = 4,201.78/x
  3. Step 3: Cross multiply
    11,221.60x = 16,835.10 × 4,201.78
  4. Step 4: Simplify right side
    11,221.60x = 70,737,386.48
  5. Step 5: Solve for x
    x = 70,737,386.48/11,221.60
  6. Step 6: Final answer
    x = 6,303.68

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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.