Home / 13,219.10-18,232.79-11,226.50

Finding the Fourth Proportional to 13,219.10, 18,232.79 and 11,226.50

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Solution

The fourth proportional to 13,219.10, 18,232.79 and 11,226.50 is: 15,484.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,219.10 : 18,232.79 = 11,226.50 : x
  2. Step 2: Convert to fraction form
    13,219.10/18,232.79 = 11,226.50/x
  3. Step 3: Cross multiply
    13,219.10x = 18,232.79 × 11,226.50
  4. Step 4: Simplify right side
    13,219.10x = 204,690,416.94
  5. Step 5: Solve for x
    x = 204,690,416.94/13,219.10
  6. Step 6: Final answer
    x = 15,484.44

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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.