Home / 10,511.83-15,774.36-4,272

Finding the Fourth Proportional to 10,511.83, 15,774.36 and 4,272

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Solution

The fourth proportional to 10,511.83, 15,774.36 and 4,272 is: 6,410.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,511.83 : 15,774.36 = 4,272 : x
  2. Step 2: Convert to fraction form
    10,511.83/15,774.36 = 4,272/x
  3. Step 3: Cross multiply
    10,511.83x = 15,774.36 × 4,272
  4. Step 4: Simplify right side
    10,511.83x = 67,388,065.92
  5. Step 5: Solve for x
    x = 67,388,065.92/10,511.83
  6. Step 6: Final answer
    x = 6,410.69

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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.