Home / 13,511.24-20,253.09-5,189.12

Finding the Fourth Proportional to 13,511.24, 20,253.09 and 5,189.12

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Solution

The fourth proportional to 13,511.24, 20,253.09 and 5,189.12 is: 7,778.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,511.24 : 20,253.09 = 5,189.12 : x
  2. Step 2: Convert to fraction form
    13,511.24/20,253.09 = 5,189.12/x
  3. Step 3: Cross multiply
    13,511.24x = 20,253.09 × 5,189.12
  4. Step 4: Simplify right side
    13,511.24x = 105,095,714.38
  5. Step 5: Solve for x
    x = 105,095,714.38/13,511.24
  6. Step 6: Final answer
    x = 7,778.39

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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.