Home / 13,176.42-18,183.88-7,208.09

Finding the Fourth Proportional to 13,176.42, 18,183.88 and 7,208.09

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Solution

The fourth proportional to 13,176.42, 18,183.88 and 7,208.09 is: 9,947.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.42 : 18,183.88 = 7,208.09 : x
  2. Step 2: Convert to fraction form
    13,176.42/18,183.88 = 7,208.09/x
  3. Step 3: Cross multiply
    13,176.42x = 18,183.88 × 7,208.09
  4. Step 4: Simplify right side
    13,176.42x = 131,071,029.87
  5. Step 5: Solve for x
    x = 131,071,029.87/13,176.42
  6. Step 6: Final answer
    x = 9,947.40

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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.