Home / 12,318.24-16,986.18-11,319.51

Finding the Fourth Proportional to 12,318.24, 16,986.18 and 11,319.51

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Solution

The fourth proportional to 12,318.24, 16,986.18 and 11,319.51 is: 15,608.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,318.24 : 16,986.18 = 11,319.51 : x
  2. Step 2: Convert to fraction form
    12,318.24/16,986.18 = 11,319.51/x
  3. Step 3: Cross multiply
    12,318.24x = 16,986.18 × 11,319.51
  4. Step 4: Simplify right side
    12,318.24x = 192,275,234.37
  5. Step 5: Solve for x
    x = 192,275,234.37/12,318.24
  6. Step 6: Final answer
    x = 15,608.99

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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.