Home / 11,491.92-15,857.52-6,455.12

Finding the Fourth Proportional to 11,491.92, 15,857.52 and 6,455.12

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Solution

The fourth proportional to 11,491.92, 15,857.52 and 6,455.12 is: 8,907.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,491.92 : 15,857.52 = 6,455.12 : x
  2. Step 2: Convert to fraction form
    11,491.92/15,857.52 = 6,455.12/x
  3. Step 3: Cross multiply
    11,491.92x = 15,857.52 × 6,455.12
  4. Step 4: Simplify right side
    11,491.92x = 102,362,194.50
  5. Step 5: Solve for x
    x = 102,362,194.50/11,491.92
  6. Step 6: Final answer
    x = 8,907.32

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1.5x scale

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.