Home / 11,490.30-15,855.49-6,453.37

Finding the Fourth Proportional to 11,490.30, 15,855.49 and 6,453.37

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Solution

The fourth proportional to 11,490.30, 15,855.49 and 6,453.37 is: 8,905.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,490.30 : 15,855.49 = 6,453.37 : x
  2. Step 2: Convert to fraction form
    11,490.30/15,855.49 = 6,453.37/x
  3. Step 3: Cross multiply
    11,490.30x = 15,855.49 × 6,453.37
  4. Step 4: Simplify right side
    11,490.30x = 102,321,343.50
  5. Step 5: Solve for x
    x = 102,321,343.50/11,490.30
  6. Step 6: Final answer
    x = 8,905.02

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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.