Home / 13,388.01-18,475.92-8,081.79

Finding the Fourth Proportional to 13,388.01, 18,475.92 and 8,081.79

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Solution

The fourth proportional to 13,388.01, 18,475.92 and 8,081.79 is: 11,153.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,388.01 : 18,475.92 = 8,081.79 : x
  2. Step 2: Convert to fraction form
    13,388.01/18,475.92 = 8,081.79/x
  3. Step 3: Cross multiply
    13,388.01x = 18,475.92 × 8,081.79
  4. Step 4: Simplify right side
    13,388.01x = 149,318,505.50
  5. Step 5: Solve for x
    x = 149,318,505.50/13,388.01
  6. Step 6: Final answer
    x = 11,153.15

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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.