Home / 13,176.27-18,183.69-7,870.37

Finding the Fourth Proportional to 13,176.27, 18,183.69 and 7,870.37

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Solution

The fourth proportional to 13,176.27, 18,183.69 and 7,870.37 is: 10,861.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,176.27 : 18,183.69 = 7,870.37 : x
  2. Step 2: Convert to fraction form
    13,176.27/18,183.69 = 7,870.37/x
  3. Step 3: Cross multiply
    13,176.27x = 18,183.69 × 7,870.37
  4. Step 4: Simplify right side
    13,176.27x = 143,112,277.35
  5. Step 5: Solve for x
    x = 143,112,277.35/13,176.27
  6. Step 6: Final answer
    x = 10,861.36

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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.