Home / 12,691.73-19,004.79-11,281.25

Finding the Fourth Proportional to 12,691.73, 19,004.79 and 11,281.25

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Solution

The fourth proportional to 12,691.73, 19,004.79 and 11,281.25 is: 16,892.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,691.73 : 19,004.79 = 11,281.25 : x
  2. Step 2: Convert to fraction form
    12,691.73/19,004.79 = 11,281.25/x
  3. Step 3: Cross multiply
    12,691.73x = 19,004.79 × 11,281.25
  4. Step 4: Simplify right side
    12,691.73x = 214,397,787.19
  5. Step 5: Solve for x
    x = 214,397,787.19/12,691.73
  6. Step 6: Final answer
    x = 16,892.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.