Home / 12,725.18-19,185.32-11,867.66

Finding the Fourth Proportional to 12,725.18, 19,185.32 and 11,867.66

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Solution

The fourth proportional to 12,725.18, 19,185.32 and 11,867.66 is: 17,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,725.18 : 19,185.32 = 11,867.66 : x
  2. Step 2: Convert to fraction form
    12,725.18/19,185.32 = 11,867.66/x
  3. Step 3: Cross multiply
    12,725.18x = 19,185.32 × 11,867.66
  4. Step 4: Simplify right side
    12,725.18x = 227,684,854.75
  5. Step 5: Solve for x
    x = 227,684,854.75/12,725.18
  6. Step 6: Final answer
    x = 17,892.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.