Home / 20,513.93-30,826.47-11,160.86

Finding the Fourth Proportional to 20,513.93, 30,826.47 and 11,160.86

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Solution

The fourth proportional to 20,513.93, 30,826.47 and 11,160.86 is: 16,771.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,513.93 : 30,826.47 = 11,160.86 : x
  2. Step 2: Convert to fraction form
    20,513.93/30,826.47 = 11,160.86/x
  3. Step 3: Cross multiply
    20,513.93x = 30,826.47 × 11,160.86
  4. Step 4: Simplify right side
    20,513.93x = 344,049,915.96
  5. Step 5: Solve for x
    x = 344,049,915.96/20,513.93
  6. Step 6: Final answer
    x = 16,771.53

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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.