Home / 11,240-15,511.20-6,272

Finding the Fourth Proportional to 11,240, 15,511.20 and 6,272

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Solution

The fourth proportional to 11,240, 15,511.20 and 6,272 is: 8,655.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,240 : 15,511.20 = 6,272 : x
  2. Step 2: Convert to fraction form
    11,240/15,511.20 = 6,272/x
  3. Step 3: Cross multiply
    11,240x = 15,511.20 × 6,272
  4. Step 4: Simplify right side
    11,240x = 97,286,246.40
  5. Step 5: Solve for x
    x = 97,286,246.40/11,240
  6. Step 6: Final answer
    x = 8,655.36

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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.