Home / 13,662.99-18,855.21-8,285.60

Finding the Fourth Proportional to 13,662.99, 18,855.21 and 8,285.60

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Solution

The fourth proportional to 13,662.99, 18,855.21 and 8,285.60 is: 11,434.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,662.99 : 18,855.21 = 8,285.60 : x
  2. Step 2: Convert to fraction form
    13,662.99/18,855.21 = 8,285.60/x
  3. Step 3: Cross multiply
    13,662.99x = 18,855.21 × 8,285.60
  4. Step 4: Simplify right side
    13,662.99x = 156,226,806.19
  5. Step 5: Solve for x
    x = 156,226,806.19/13,662.99
  6. Step 6: Final answer
    x = 11,434.31

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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.