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Finding the Fourth Proportional to 12,759.88, 19,046.14 and 11,820.52

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Solution

The fourth proportional to 12,759.88, 19,046.14 and 11,820.52 is: 17,644.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,759.88 : 19,046.14 = 11,820.52 : x
  2. Step 2: Convert to fraction form
    12,759.88/19,046.14 = 11,820.52/x
  3. Step 3: Cross multiply
    12,759.88x = 19,046.14 × 11,820.52
  4. Step 4: Simplify right side
    12,759.88x = 225,135,278.79
  5. Step 5: Solve for x
    x = 225,135,278.79/12,759.88
  6. Step 6: Final answer
    x = 17,644.00

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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.