Home / 13,385.91-18,481.23-8,607.99

Finding the Fourth Proportional to 13,385.91, 18,481.23 and 8,607.99

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Solution

The fourth proportional to 13,385.91, 18,481.23 and 8,607.99 is: 11,884.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,385.91 : 18,481.23 = 8,607.99 : x
  2. Step 2: Convert to fraction form
    13,385.91/18,481.23 = 8,607.99/x
  3. Step 3: Cross multiply
    13,385.91x = 18,481.23 × 8,607.99
  4. Step 4: Simplify right side
    13,385.91x = 159,086,243.03
  5. Step 5: Solve for x
    x = 159,086,243.03/13,385.91
  6. Step 6: Final answer
    x = 11,884.60

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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.