Home / 20,794.72-28,676.88-13,613.92

Finding the Fourth Proportional to 20,794.72, 28,676.88 and 13,613.92

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Solution

The fourth proportional to 20,794.72, 28,676.88 and 13,613.92 is: 18,774.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,794.72 : 28,676.88 = 13,613.92 : x
  2. Step 2: Convert to fraction form
    20,794.72/28,676.88 = 13,613.92/x
  3. Step 3: Cross multiply
    20,794.72x = 28,676.88 × 13,613.92
  4. Step 4: Simplify right side
    20,794.72x = 390,404,750.17
  5. Step 5: Solve for x
    x = 390,404,750.17/20,794.72
  6. Step 6: Final answer
    x = 18,774.22

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1.5x scale

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.