Home / 15,206.44-20,979.96-8,491

Finding the Fourth Proportional to 15,206.44, 20,979.96 and 8,491

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Solution

The fourth proportional to 15,206.44, 20,979.96 and 8,491 is: 11,714.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,206.44 : 20,979.96 = 8,491 : x
  2. Step 2: Convert to fraction form
    15,206.44/20,979.96 = 8,491/x
  3. Step 3: Cross multiply
    15,206.44x = 20,979.96 × 8,491
  4. Step 4: Simplify right side
    15,206.44x = 178,140,840.36
  5. Step 5: Solve for x
    x = 178,140,840.36/15,206.44
  6. Step 6: Final answer
    x = 11,714.83

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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.