Home / 10,829.20-16,234.08-5,638.72

Finding the Fourth Proportional to 10,829.20, 16,234.08 and 5,638.72

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Solution

The fourth proportional to 10,829.20, 16,234.08 and 5,638.72 is: 8,453.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,829.20 : 16,234.08 = 5,638.72 : x
  2. Step 2: Convert to fraction form
    10,829.20/16,234.08 = 5,638.72/x
  3. Step 3: Cross multiply
    10,829.20x = 16,234.08 × 5,638.72
  4. Step 4: Simplify right side
    10,829.20x = 91,539,431.58
  5. Step 5: Solve for x
    x = 91,539,431.58/10,829.20
  6. Step 6: Final answer
    x = 8,453.02

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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.