Home / 12,509.29-18,684.03-11,321.51

Finding the Fourth Proportional to 12,509.29, 18,684.03 and 11,321.51

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Solution

The fourth proportional to 12,509.29, 18,684.03 and 11,321.51 is: 16,909.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,509.29 : 18,684.03 = 11,321.51 : x
  2. Step 2: Convert to fraction form
    12,509.29/18,684.03 = 11,321.51/x
  3. Step 3: Cross multiply
    12,509.29x = 18,684.03 × 11,321.51
  4. Step 4: Simplify right side
    12,509.29x = 211,531,286.00
  5. Step 5: Solve for x
    x = 211,531,286.00/12,509.29
  6. Step 6: Final answer
    x = 16,909.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.