Home / 13,183.12-18,193.16-7,518.72

Finding the Fourth Proportional to 13,183.12, 18,193.16 and 7,518.72

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Solution

The fourth proportional to 13,183.12, 18,193.16 and 7,518.72 is: 10,376.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,183.12 : 18,193.16 = 7,518.72 : x
  2. Step 2: Convert to fraction form
    13,183.12/18,193.16 = 7,518.72/x
  3. Step 3: Cross multiply
    13,183.12x = 18,193.16 × 7,518.72
  4. Step 4: Simplify right side
    13,183.12x = 136,789,275.96
  5. Step 5: Solve for x
    x = 136,789,275.96/13,183.12
  6. Step 6: Final answer
    x = 10,376.09

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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.