Home / 13,183.89-18,195.80-7,518.64

Finding the Fourth Proportional to 13,183.89, 18,195.80 and 7,518.64

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Solution

The fourth proportional to 13,183.89, 18,195.80 and 7,518.64 is: 10,376.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.89 : 18,195.80 = 7,518.64 : x
  2. Step 2: Convert to fraction form
    13,183.89/18,195.80 = 7,518.64/x
  3. Step 3: Cross multiply
    13,183.89x = 18,195.80 × 7,518.64
  4. Step 4: Simplify right side
    13,183.89x = 136,807,669.71
  5. Step 5: Solve for x
    x = 136,807,669.71/13,183.89
  6. Step 6: Final answer
    x = 10,376.88

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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.