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Finding the Fourth Proportional to 15,797.63, 21,829.60 and 15,028.84

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Solution

The fourth proportional to 15,797.63, 21,829.60 and 15,028.84 is: 20,767.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,797.63 : 21,829.60 = 15,028.84 : x
  2. Step 2: Convert to fraction form
    15,797.63/21,829.60 = 15,028.84/x
  3. Step 3: Cross multiply
    15,797.63x = 21,829.60 × 15,028.84
  4. Step 4: Simplify right side
    15,797.63x = 328,073,611.74
  5. Step 5: Solve for x
    x = 328,073,611.74/15,797.63
  6. Step 6: Final answer
    x = 20,767.26

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1.5x scale

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.