Home / 31,221.20-46,815.60-11,489.60

Finding the Fourth Proportional to 31,221.20, 46,815.60 and 11,489.60

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Solution

The fourth proportional to 31,221.20, 46,815.60 and 11,489.60 is: 17,228.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,221.20 : 46,815.60 = 11,489.60 : x
  2. Step 2: Convert to fraction form
    31,221.20/46,815.60 = 11,489.60/x
  3. Step 3: Cross multiply
    31,221.20x = 46,815.60 × 11,489.60
  4. Step 4: Simplify right side
    31,221.20x = 537,892,517.76
  5. Step 5: Solve for x
    x = 537,892,517.76/31,221.20
  6. Step 6: Final answer
    x = 17,228.44

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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.