Home / 13,747.72-20,620.46-3,886.76

Finding the Fourth Proportional to 13,747.72, 20,620.46 and 3,886.76

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Solution

The fourth proportional to 13,747.72, 20,620.46 and 3,886.76 is: 5,829.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,747.72 : 20,620.46 = 3,886.76 : x
  2. Step 2: Convert to fraction form
    13,747.72/20,620.46 = 3,886.76/x
  3. Step 3: Cross multiply
    13,747.72x = 20,620.46 × 3,886.76
  4. Step 4: Simplify right side
    13,747.72x = 80,146,779.11
  5. Step 5: Solve for x
    x = 80,146,779.11/13,747.72
  6. Step 6: Final answer
    x = 5,829.82

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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.