Home / 20,830.62-28,741.81-12,335.41

Finding the Fourth Proportional to 20,830.62, 28,741.81 and 12,335.41

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Solution

The fourth proportional to 20,830.62, 28,741.81 and 12,335.41 is: 17,020.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,830.62 : 28,741.81 = 12,335.41 : x
  2. Step 2: Convert to fraction form
    20,830.62/28,741.81 = 12,335.41/x
  3. Step 3: Cross multiply
    20,830.62x = 28,741.81 × 12,335.41
  4. Step 4: Simplify right side
    20,830.62x = 354,542,010.49
  5. Step 5: Solve for x
    x = 354,542,010.49/20,830.62
  6. Step 6: Final answer
    x = 17,020.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.