Home / 13,183.05-18,192.80-7,876.85

Finding the Fourth Proportional to 13,183.05, 18,192.80 and 7,876.85

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Solution

The fourth proportional to 13,183.05, 18,192.80 and 7,876.85 is: 10,870.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.05 : 18,192.80 = 7,876.85 : x
  2. Step 2: Convert to fraction form
    13,183.05/18,192.80 = 7,876.85/x
  3. Step 3: Cross multiply
    13,183.05x = 18,192.80 × 7,876.85
  4. Step 4: Simplify right side
    13,183.05x = 143,301,885.41
  5. Step 5: Solve for x
    x = 143,301,885.41/13,183.05
  6. Step 6: Final answer
    x = 10,870.16

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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.