Home / 28,904.40-43,324.20-12,261.60

Finding the Fourth Proportional to 28,904.40, 43,324.20 and 12,261.60

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Solution

The fourth proportional to 28,904.40, 43,324.20 and 12,261.60 is: 18,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,904.40 : 43,324.20 = 12,261.60 : x
  2. Step 2: Convert to fraction form
    28,904.40/43,324.20 = 12,261.60/x
  3. Step 3: Cross multiply
    28,904.40x = 43,324.20 × 12,261.60
  4. Step 4: Simplify right side
    28,904.40x = 531,224,010.72
  5. Step 5: Solve for x
    x = 531,224,010.72/28,904.40
  6. Step 6: Final answer
    x = 18,378.66

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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.