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Finding the Fourth Proportional to 21,751.76, 30,016 and 12,797.53

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Solution

The fourth proportional to 21,751.76, 30,016 and 12,797.53 is: 17,659.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,751.76 : 30,016 = 12,797.53 : x
  2. Step 2: Convert to fraction form
    21,751.76/30,016 = 12,797.53/x
  3. Step 3: Cross multiply
    21,751.76x = 30,016 × 12,797.53
  4. Step 4: Simplify right side
    21,751.76x = 384,130,660.48
  5. Step 5: Solve for x
    x = 384,130,660.48/21,751.76
  6. Step 6: Final answer
    x = 17,659.75

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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.